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mirror of https://github.com/gnss-sdr/gnss-sdr synced 2024-12-04 07:20:03 +00:00

Use https instead of http in links when available

Update copyright year in headers
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Carles Fernandez 2018-05-13 22:49:11 +02:00
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795 changed files with 1594 additions and 1598 deletions

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@ -23,7 +23,7 @@ Contact Information
Mailing Lists
----------------------------
gnss-sdr-developers@lists.sourceforge.net
http://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers
https://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers
Email

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@ -1,4 +1,4 @@
# Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
# Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
########################################################################

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@ -1,7 +1,7 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
@ -645,7 +645,7 @@ the "copyright" line and a pointer to where the full notice is found.
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
@ -664,11 +664,11 @@ might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
<https://www.gnu.org/philosophy/why-not-lgpl.html>.

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@ -1360,7 +1360,7 @@ More documentation at the [PVT Blocks page](https://gnss-sdr.org/docs/sp-blocks/
About the software license
==========================
GNSS-SDR is released under the [General Public License (GPL) v3](http://www.gnu.org/licenses/gpl.html), thus securing practical usability, inspection, and continuous improvement by the research community, allowing the discussion based on tangible code and the analysis of results obtained with real signals. The GPL implies that:
GNSS-SDR is released under the [General Public License (GPL) v3](https://www.gnu.org/licenses/gpl.html), thus securing practical usability, inspection, and continuous improvement by the research community, allowing the discussion based on tangible code and the analysis of results obtained with real signals. The GPL implies that:
1. Copies may be distributed free of charge or for money, but the source code has to be shipped or provided free of charge (or at cost price) on demand. The receiver of the source code has the same rights meaning he can share copies free of charge or resell.
2. The licensed material may be analyzed or modified.

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
find_library(GFORTRAN NAMES gfortran
PATHS /usr/lib

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# - Try to find GFlags
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# - Try to find the Google Glog library
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# - Find gpstk library
# Find the native gpstk includes and library

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find GNU Radio

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# Tries to find Gperftools.
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find GR-DBFCTTC Module

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find GR-GN3S Module

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# Tries to find gr-osmosdr.
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# Tries to find libosmosdr.
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# - Find Log4cpp
# Find the native LOG4CPP includes and library

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# FindMATIO
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
FIND_PACKAGE(PkgConfig)
PKG_CHECK_MODULES(PC_ORC "orc-0.4 > 0.4.22")

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
# - Try to find OpenBLAS library (not headers!)
#

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
# This file taken from FindOpenCL project @ http://gitorious.com/findopencl

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
INCLUDE(FindPkgConfig)
PKG_CHECK_MODULES(PC_TELEORBIT teleorbit)

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find the library for the USRP Hardware Driver

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find VOLK (Vector-Optimized Library of Kernels)

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Find VOLK (Vector-Optimized Library of Kernels) GNSS-SDR library

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
INCLUDE(FindPkgConfig)
PKG_CHECK_MODULES(PC_IIO gnuradio-iio)

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
INCLUDE(FindPkgConfig)
PKG_CHECK_MODULES(PC_LIBIIO libiio)

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# Setup the python interpreter:

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
##############################################################################
# check if the compiler defines the architecture as ARM and set the

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
###############################################################################

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
##########################################################
# Toolchain file for Open Embedded

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
##########################################################
# Toolchain file for Zynq-7000 devices

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
if(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
message(FATAL_ERROR "Cannot find install manifest: @CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
/*! \mainpage
@ -23,12 +23,12 @@
Welcome to GNSS-SDR!
GNSS-SDR is an open-source <a href="http://en.wikipedia.org/wiki/Software_GNSS_receiver" target="_blank">GNSS software receiver</a> freely available to the research community. This project provides a common framework for GNSS signal processing which can operate in a variety of computer platforms. This tool is intended to foster collaboration, increase awareness, and reduce development costs in the field of GNSS receiver design and customized use of GNSS signals.
GNSS-SDR is an open-source <a href="https://en.wikipedia.org/wiki/Software_GNSS_receiver" target="_blank">GNSS software receiver</a> freely available to the research community. This project provides a common framework for GNSS signal processing which can operate in a variety of computer platforms. This tool is intended to foster collaboration, increase awareness, and reduce development costs in the field of GNSS receiver design and customized use of GNSS signals.
For details about GNSS-SDR and using it, please see the <a
href="https://gnss-sdr.org" target="_blank"><b>main project page</b></a> or browse the code at the <a
href="http://sourceforge.net/p/gnss-sdr/cttc/ci/master/tree/" target="_blank"><b>Sourceforge project page</b></a>. You could be also interested in
<a href="http://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>subscribing to the mailing list</b></a>.
href="https://sourceforge.net/p/gnss-sdr/cttc/ci/master/tree/" target="_blank"><b>Sourceforge project page</b></a>. You could be also interested in
<a href="https://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>subscribing to the mailing list</b></a>.
\section toc Contents
\li \ref overview
@ -71,8 +71,8 @@ buses to a variety of either commercially available or custom-made RF front-ends
As signal inputs, it accepts:
\li Raw data file captured with a data grabber (digitized at some intermediate frequency or directly at baseband).
\li Any suitable RF configuration that can be driven by the Universal Software Radio Peripheral Hardware Driver (<a href="http://files.ettus.com/uhd_docs/manual/html/" target="_blank">UHD</a>).
This includes all current and future <a href="http://www.ettus.com/">Ettus Research</a> products. The USRP1 + DBSRX 2.2 daughterboard is an example of working configuration for GPS L1 C/A and Galileo E1B and E1C signals.
\li Any suitable RF configuration that can be driven by the Universal Software Radio Peripheral Hardware Driver (<a href="https://files.ettus.com/uhd_docs/manual/html/" target="_blank">UHD</a>).
This includes all current and future <a href="https://www.ettus.com/">Ettus Research</a> products. The USRP1 + DBSRX 2.2 daughterboard is an example of working configuration for GPS L1 C/A and Galileo E1B and E1C signals.
\li The <a href="https://gnss-sdr.org/docs/tutorials/sige-gn3s-sampler-v2-usb-front-end/" target="blank">GN3S v2 USB dongle</a> (GN3S v3 might work with small modifications).
\li Experimentally, with some <a href="https://gnss-sdr.org/docs/tutorials/gnss-sdr-operation-realtek-rtl2832u-usb-dongle-dvb-t-receiver/" target="_blank">USB DVB-T dongles based on the Realtek RTL2832U chipset</a>.
\li For mathematical representations of the targeted signals, check out the \ref the_signal_model page.
@ -88,19 +88,19 @@ As outputs, it provides:
\section build Building GNSS-SDR
In principle, GNSS-SDR can be built in any Unix-like system. In practice, it depends on being able to install all the required dependencies. See the <a href="https://gnss-sdr.org/build-and-install/" target="_blank">building guide</a> page for details about the project's
dependencies and build process. Mainly, it consists on installing <a href="http://gnuradio.org/" target="_blank">GNU Radio</a> plus some few more libraries:
dependencies and build process. Mainly, it consists on installing <a href="https://gnuradio.org/" target="_blank">GNU Radio</a> plus some few more libraries:
\li <a href="http://code.google.com/p/gflags/" target="_blank">Gflags</a>, a library that implements commandline flags processing,
\li <a href="http://code.google.com/p/google-glog/" target="_blank">Glog</a>, a library that implements application-level logging,
\li <a href="https://github.com/gflags/gflags" target="_blank">Gflags</a>, a library that implements commandline flags processing,
\li <a href="https://github.com/google/glog" target="_blank">Glog</a>, a library that implements application-level logging,
\li <a href="http://arma.sourceforge.net/" target="_blank">Armadillo</a>, a C++ linear algebra library,
\li <a href="http://code.google.com/p/googletest/" target="_blank">Googletest</a>, Google's framework for writing C++ tests (requires definition of the GTEST_DIR variable),
\li <a href="https://github.com/google/googletest" target="_blank">Googletest</a>, Google's framework for writing C++ tests (requires definition of the GTEST_DIR variable),
and, optionally,
\li <a href="http://code.google.com/p/gperftools/" target="_blank">Gperftools</a>, which provides fast, multi-threaded malloc() and performance analysis tools.
\li <a href="https://github.com/gperftools/gperftools" target="_blank">Gperftools</a>, which provides fast, multi-threaded malloc() and performance analysis tools.
After all dependencies are installed, clone the GNSS-SDR repository:
\verbatim
$ git clone git://git.code.sf.net/p/gnss-sdr/cttc gnss-sdr
$ git clone https://github.com/gnss-sdr/gnss-sdr
\endverbatim
This will create a folder named gnss-sdr with the following structure:
@ -136,7 +136,7 @@ This will create a folder named gnss-sdr with the following structure:
|-----utils <- some utilities (e.g. Matlab scripts)
\endverbatim
You are now ready to build GNSS-SDR by using <a href="http://www.cmake.org/" target="_blank">CMake</a> as building tool:
You are now ready to build GNSS-SDR by using <a href="https://cmake.org/" target="_blank">CMake</a> as building tool:
\verbatim
$ cd gnss-sdr/build
$ cmake ../
@ -201,7 +201,7 @@ $ sudo make uninstall
$ rm -rf *
\endverbatim
You can also check <a href="http://git-scm.com/book" target="_blank">The Git Book</a> for more information about Git usage.
You can also check <a href="https://git-scm.com/book" target="_blank">The Git Book</a> for more information about Git usage.
\section using_gnss-sdr Using GNSS-SDR
@ -214,7 +214,7 @@ $ gnss-sdr --config_file=../conf/my_receiver.conf
\endverbatim
You can see a guide of available implementations at <tt>gnss-sdr/conf/master.conf</tt>. That folder contains other working examples as well. If you have a working
configuration and want to share it will others, please email it to the <a href="http://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>GNSS-SDR developers mailing list</b></a>
configuration and want to share it will others, please email it to the <a href="https://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>GNSS-SDR developers mailing list</b></a>
and we will be happy to upload it to the server.
You can use a single configuration file for processing
@ -228,7 +228,7 @@ You can get a complete list of available commandline flags by doing:
\verbatim
$ gnss-sdr --help
\endverbatim
For general usage of commandline flags, see <a href="http://google-gflags.googlecode.com/svn/trunk/doc/gflags.html" target="_blank">how to use Google Commandline Flags</a>.
\section control_plane Control plane
GNSS-SDR's main method initializes the logging library, processes the command line flags, if any, provided by the user and instantiates a ControlThread object.
@ -276,7 +276,7 @@ SignalConditioner.implementation=Pass_Through
Since the configuration is just a set of property names and values without any meaning or syntax, the system is very versatile and easily extendable. Adding new
properties to the system only implies modifications in the classes that will make use of these properties. In addition, the configuration files are not checked
against any strict syntax so it is always in a correct status (as long as it contains pairs of property names and values in <a href="http://en.wikipedia.org/wiki/INI_file" target="_blank">INI format</a>).
against any strict syntax so it is always in a correct status (as long as it contains pairs of property names and values in <a href="https://en.wikipedia.org/wiki/INI_file" target="_blank">INI format</a>).
\subsection gnss_block_factory GNSS block factory
Hence, the application defines a simple accessor class to fetch the configuration pairs of values and passes them to a factory class called GNSSBlockFactory.
@ -373,10 +373,7 @@ a rough location and the approximate time of day are available, and the receiver
was tracking a satellite and the signal line of sight broke for a short period of time, but the ephemeris and almanac data is still valid, or this information
is provided by other means), and an acquisition process can finish deciding that the satellite is not present, that longer integration is needed in order to
confirm the presence of the satellite, or declaring the satellite present. In the latter case, acquisition process should stop and trigger the tracking module
with coarse estimations of the synchronization parameters. The mathematical abstraction used to design this logic is known as finite state machine (FSM), that is
a behavior model composed of a finite number of states, transitions between those states, and actions. For the implementation, we used the
<a href="http://www.boost.org/libs/statechart/doc/tutorial.html" target="_blank">Boost.Statechart library</a>,
which provides desirable features such as support for asynchronous state machines, multi-threading, type-safety, error handling and compile-time validation.
with coarse estimations of the synchronization parameters.
The abstract class ChannelInterface represents an interface to a channel GNSS block. Check Channel for an actual implementation.
@ -513,7 +510,7 @@ Most of GNSS signal links are modulated by a navigation message containing the t
error correction). Navigation data bits are structured in words, pages, subframes, frames and superframes. Sometimes, bits corresponding to a single parameter are
spread over different words, and values extracted from different frames are required for proper decoding. Some words are for synchronization purposes, others for
error control an others contain actual information. There are also error control mechanisms, from parity checks to forward error correction (FEC) encoding and
interleaving, depending on the system. All this decoding complexity is managed by a finite state machine implemented with the <a href="http://www.boost.org/libs/statechart/doc/tutorial.html" target="_blank">Boost.Statechart library</a>.
interleaving, depending on the system.
The common interface is TelemetryDecoderInterface. Check GpsL1CaTelemetryDecoder for an example of the GPS L1 NAV message decoding adapter, and gps_l1_ca_telemetry_decoder_cc
for an actual implementation of a signal processing block. Configuration example:
@ -583,7 +580,7 @@ PVT.dump_filename=./PVT ; Log path and filename without extension.
\section license About the software license
GNSS-SDR is released under the <a href="http://www.gnu.org/licenses/gpl.html" target="_blank">General Public License (GPL) v3</a>, thus securing practical usability, inspection,
GNSS-SDR is released under the <a href="https://www.gnu.org/licenses/gpl.html" target="_blank">General Public License (GPL) v3</a>, thus securing practical usability, inspection,
and continuous improvement by the research community, allowing the discussion based on tangible code and the analysis of results obtained with real signals.
The GPL implies that:
@ -656,7 +653,7 @@ Another interesting option is working in real-time with a RF front-end. We provi
and for some DVB-T USB dongles. Start with a low number of channels and then increase it in order to test how many channels your processor can handle in real-time.
You can find more information at the <a href="https://gnss-sdr.org/docs/" target="_blank"><b>GNSS-SDR Documentation page</b></a> or directly asking to the
<a href="http://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>GNSS-SDR Developers mailing list</b></a>.
<a href="https://lists.sourceforge.net/lists/listinfo/gnss-sdr-developers" target="_blank"><b>GNSS-SDR Developers mailing list</b></a>.
You are also very welcome to contribute to the project, there are many ways to <a href="https://gnss-sdr.org/contribute/" target="_blank"><b>participate in GNSS-SDR</b></a>.
If you need some special feature not yet implemented, the Developer Team would love to be hired for developing it.

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@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
/*! \page reference_docs Reference Documents
@ -21,32 +21,32 @@
\section icd Interface Control Documents
\subsection gps GPS
All the current GPS Interface Control Documents can be downloaded from <a href="http://www.gps.gov" target="_blank">GPS.gov</a>, the official U.S. Government webpage for GPS.
All the current GPS Interface Control Documents can be downloaded from <a href="https://www.gps.gov" target="_blank">GPS.gov</a>, the official U.S. Government webpage for GPS.
\li GPS L1 and L2C: Global Positioning System Directorate, <a href="http://www.gps.gov/technical/icwg/IS-GPS-200H.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision H</b></a>. September, 2013.
\li GPS L1C (available with first Block III launch): Global Positioning System Directorate, <a href="http://www.gps.gov/technical/icwg/IS-GPS-800D.pdf" target="_blank"><b>Interface Specification IS-GPS-800 Revision D</b></a>. September, 2013.
\li GPS L5 (first Block IIF satellite launched on May, 2010): Global Positioning System Directorate, <a href="http://www.gps.gov/technical/icwg/IS-GPS-705D.pdf" target="_blank"><b>Interface Specification IS-GPS-705 Revision D</b></a>. September, 2013.
\li GPS L1 and L2C: Global Positioning System Directorate, <a href="https://www.gps.gov/technical/icwg/IS-GPS-200H.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision H</b></a>. September, 2013.
\li GPS L1C (available with first Block III launch): Global Positioning System Directorate, <a href="https://www.gps.gov/technical/icwg/IS-GPS-800D.pdf" target="_blank"><b>Interface Specification IS-GPS-800 Revision D</b></a>. September, 2013.
\li GPS L5 (first Block IIF satellite launched on May, 2010): Global Positioning System Directorate, <a href="https://www.gps.gov/technical/icwg/IS-GPS-705D.pdf" target="_blank"><b>Interface Specification IS-GPS-705 Revision D</b></a>. September, 2013.
\subsection glonass GLONASS
Official GLONASS webpage: <a href="http://www.glonass-ianc.rsa.ru/en/" target="_blank"> Information-analytical centre official website</a>.
Official GLONASS webpage: <a href="http://www.glonass-ianc.rsa.ru/en/" target="_blank"> Information-analytical centre official website</a>.
\li Standard Accuracy (ST) signals at L1 and L2: Russian Institute of Space Device Engineering, Global Navigation Satellite System GLONASS. <a href="http://facility.unavco.org/data/docs/ICD_GLONASS_5.1_(2008)_en.pdf" target="_blank"><b>Interface Control Document. Navigational radiosignal in bands L1, L2. Edition 5.1</b></a>, Moscow, Russia, 2008
\subsection galileo Galileo
Check the <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/index_en.htm" target="_blank">Galileo website of the European Commission</a> and the
<a href="http://www.esa.int/Our_Activities/Navigation/The_future_-_Galileo/What_is_Galileo" target="_blank">Galileo website of the European Space Agency</a>.
Check the <a href="https://ec.europa.eu/enterprise/policies/satnav/galileo/index_en.htm" target="_blank">Galileo website of the European Commission</a> and the
<a href="https://www.esa.int/Our_Activities/Navigation/The_future_-_Galileo/What_is_Galileo" target="_blank">Galileo website of the European Space Agency</a>.
There is a website with <a href="http://igs.org/mgex/Status_GAL.htm" target="_blank">Galileo constellation status information</a> from the International GNSS Service.
\li Galileo E5, E6, and E1: European GNSS (Galileo) Open Service. <a href="http://www.gsc-europa.eu/system/files/galileo_documents/Galileo_OS_SIS_ICD.pdf" target="_blank"><b>Signal In Space Interface Control Document. Ref: OS SIS ICD, Issue 1.2</b></a>, European Commission, Nov. 2015.
\li Galileo E5, E6, and E1: European GNSS (Galileo) Open Service. <a href="http://www.gsc-europa.eu/system/files/galileo_documents/Galileo_OS_SIS_ICD.pdf" target="_blank"><b>Signal In Space Interface Control Document. Ref: OS SIS ICD, Issue 1.2</b></a>, European Commission, Nov. 2015.
\li European GNSS (Galileo) Open Service <a href="" target="_blank"><b>Signal-In-Space Operational Status Definition</b></a>, European Commission, Sept. 2015.
The European Commission is granting free access to the technical information on the future Galileo open service signal, i.e. the specifications manufacturers
and developers need to process data received from satellites. This document informs receiver manufacturers, application developers and service providers on how
The European Commission is granting free access to the technical information on the future Galileo open service signal, i.e. the specifications manufacturers
and developers need to process data received from satellites. This document informs receiver manufacturers, application developers and service providers on how
to use the future Galileo system and what they can expect in terms of performance.
\subsection beidou BeiDou
@ -65,20 +65,20 @@ Open Service Signal (Version 2.0). China Satellite Navigation Office, December 2
\li <a href="http://egnos-portal.eu/sites/default/files/EGNOS-open-service-sdd.PDF" target="_blank"><b>EGNOS Open Service (OS) Service Definition Document. Ref: EGN-SDD OS, Revision 2.2</b></a>, European GNSS Agency (GSA), Feb. 12, 2015. This is a complementary document to the RTCA DO229D, mentioned above. It describes the scope of services provided by the EGNOS Open Service to be used by end-users or Application Specific Service Providers. It details the general conditions relating to the use of the EGNOS service, a technical description of the Signal-in-Space (SIS), the reference receiver, environmental conditions, the service performance achieved and aspects relating to service provision.
\li <a href="http://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/library/official_docs/egnos_sol_sdd_in_force.pdf" target="_blank"><b>EGNOS Safety of Life Service Definition Document. Ref: EGN-SDD SoL, Revision 3.0</b></a>, European GNSS Agency (GSA), Sep. 22, 2015. The EGNOS Safety of Life (SoL) Service is provided openly and is freely accessible without any direct charge and is tailored to safety-critical transport applications in various domains, in particular for aviation applications. The service is thus compliant with the aviation APV-I (Approach with Vertical Guidance) requirements, as defined by ICAO in Annex 10, but may support also applications in other SoL domains.
\li <a href="http://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/library/official_docs/egnos_sol_sdd_in_force.pdf" target="_blank"><b>EGNOS Safety of Life Service Definition Document. Ref: EGN-SDD SoL, Revision 3.0</b></a>, European GNSS Agency (GSA), Sep. 22, 2015. The EGNOS Safety of Life (SoL) Service is provided openly and is freely accessible without any direct charge and is tailored to safety-critical transport applications in various domains, in particular for aviation applications. The service is thus compliant with the aviation APV-I (Approach with Vertical Guidance) requirements, as defined by ICAO in Annex 10, but may support also applications in other SoL domains.
\li <a href="http://egnos-portal.gsa.europa.eu/sites/default/files/EGNOS_EDAS_SDD_2.1.pdf" target="_blank"><b>EGNOS Data Access Service (EDAS) Service Definition Document, Rf: EGN-SDD EDAS, V2.1</b></a>, European GNSS Agency (GSA), Dec. 19, 2014.
More information about EGNOS can be found through the <a href="http://www.egnos-portal.eu/" target="_blank">EGNOS Portal</a>.
More information about EGNOS can be found through the <a href="https://egnos-user-support.essp-sas.eu/new_egnos_ops/index.php" target="_blank">EGNOS Portal</a>.
\section standards Other Standards
\subsection rinex RINEX
The final output of a navigation receiver is usually its position, speed or other related physical quantities. However, the calculation of those quantities
are based on a series of measurements from one or more satellite constellations. Although receivers calculate positions in real time, in many cases it is
interesting to store intermediate measures for later post-processing. RINEX is the standard format that allows the management and disposal of the measures
The final output of a navigation receiver is usually its position, speed or other related physical quantities. However, the calculation of those quantities
are based on a series of measurements from one or more satellite constellations. Although receivers calculate positions in real time, in many cases it is
interesting to store intermediate measures for later post-processing. RINEX is the standard format that allows the management and disposal of the measures
generated by a receiver, as well as their off-line processing by a multitude of applications.
\li The most common version at present is <a href="http://igscb.jpl.nasa.gov/igscb/data/format/rinex211.txt" target="_blank"><b>RINEX: The Receiver Independent Exchange Format Version 2.11</b></a>, which enables storage of measurements from pseudorange, carrier-phase and Doppler systems for GPS or GLONASS,
\li The most common version at present is <a href="http://igscb.jpl.nasa.gov/igscb/data/format/rinex211.txt" target="_blank"><b>RINEX: The Receiver Independent Exchange Format Version 2.11</b></a>, which enables storage of measurements from pseudorange, carrier-phase and Doppler systems for GPS or GLONASS,
along with data from EGNOS and WAAS satellite based augmentation systems (SBAS).
\li The most recent version is <a href="ftp://igscb.jpl.nasa.gov/igscb/data/format/rinex301.pdf" target="_blank"><b>RINEX: The Receiver Independent Exchange Format Version 3.01</b></a> published in June, 2009.
@ -88,11 +88,11 @@ It includes Galileo and improves the handling of multi-constellation data files.
\subsection nmea NMEA
The <a href="http://www.nmea.org" target="_blank">National Marine Electronics Association </a> released the NMEA 0183 Interface Standard, which defines electrical signal requirements, data transmission protocol and time,
The <a href="http://www.nmea.org" target="_blank">National Marine Electronics Association </a> released the NMEA 0183 Interface Standard, which defines electrical signal requirements, data transmission protocol and time,
and specific sentence formats for a 4800-baud serial data bus. The standard is <a href="http://www.nmea.org/store/index.asp?show=cprd&cid=8" target="_blank">available for purchase</a>.
\subsection kml KML
KML is an XML language focused on geographic visualization, including annotation of maps and images. Geographic visualization includes not only the presentation of graphical data on the globe, but also the control of the user's navigation in the sense of where to go and where to look.
KML is an XML language focused on geographic visualization, including annotation of maps and images. Geographic visualization includes not only the presentation of graphical data on the globe, but also the control of the user's navigation in the sense of where to go and where to look.
Google submitted KML (formerly Keyhole Markup Language) to the Open Geospatial Consortium (OGC) to be evolved within the OGC consensus process with the following goal: KML Version 2.2 has been adopted as an OGC implementation standard.
\li Open Geospatial Consortium, Inc., <a href="http://portal.opengeospatial.org/files/?artifact_id=27810" target="_blank"><b>OGC KML Version 2.2.0</b></a>, April 2008.
@ -100,33 +100,33 @@ Google submitted KML (formerly Keyhole Markup Language) to the Open Geospatial C
\subsection cxx C++ Standards
In 1998, the C++ standards committee (the <a href="http://www.open-std.org/JTC1/SC22/WG21/" target="_blank">ISO/IEC JTC1/SC22/WG21 working group</a>)
standardized C++ and published the international standard ISO/IEC 14882:1998 (informally known as C++98). A technical corrigendum was approved in 2003,
In 1998, the C++ standards committee (the <a href="http://www.open-std.org/JTC1/SC22/WG21/" target="_blank">ISO/IEC JTC1/SC22/WG21 working group</a>)
standardized C++ and published the international standard ISO/IEC 14882:1998 (informally known as C++98). A technical corrigendum was approved in 2003,
and the standard was published again as the ISO/IEC 14882:2003.
Published ISO and IEC standards can be purchased from a member body of ISO or IEC. Free copies of the C++ standard Committee Drafts
were <a href="http://www.csci.csusb.edu/dick/c++std/" target="_blank">made public</a> before the official standard was released.
Published ISO and IEC standards can be purchased from a member body of ISO or IEC. Free copies of the C++ standard Committee Drafts
were <a href="http://www.csci.csusb.edu/dick/c++std/" target="_blank">made public</a> before the official standard was released.
In 2005, a technical report, called the <a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1836.pdf" target="_blank">Library Technical Report 1</a>
(often known as TR1 for short), was released. While not an official part of the standard, it specified a number of extensions to the standard library,
which were expected to be included in the next version of C++. The linked document is officially a draft, but that is due only to procedural issues;
In 2005, a technical report, called the <a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1836.pdf" target="_blank">Library Technical Report 1</a>
(often known as TR1 for short), was released. While not an official part of the standard, it specified a number of extensions to the standard library,
which were expected to be included in the next version of C++. The linked document is officially a draft, but that is due only to procedural issues;
the content did not change. Scott Meyers provides more <a href="http://www.aristeia.com/EC3E/TR1_info.html" target="_blank">TR1 information</a>.
Some ISO/IEC standards are publicly available, for instance: <a href="http://standards.iso.org/ittf/PubliclyAvailableStandards/c043351_ISO_IEC_TR_18015_2006(E).zip" target="_blank">ISO/IEC TR 18015:2006 Technical Report on C++ Performance</a>.
The standard for the next version of the language (previously known as C++0x) was finally
published with the name of <a href="http://en.wikipedia.org/wiki/C%2B%2B11" target="_blank">C++11</a> in September, 2011, as the ISO/IEC 14882:2011 Standard. GCC, the GNU Compiler Collection,
<a href="http://gcc.gnu.org/projects/cxx0x.html" target="_blank">provides partial C++11 support</a>. Bjarne Stroustrup maintains a <a href="http://www.stroustrup.com/C++11FAQ.html" target="_blank">C++11 FAQ</a>.
The standard for the next version of the language (previously known as C++0x) was finally
published with the name of <a href="https://en.wikipedia.org/wiki/C%2B%2B11" target="_blank">C++11</a> in September, 2011, as the ISO/IEC 14882:2011 Standard. GCC, the GNU Compiler Collection,
<a href="http://gcc.gnu.org/projects/cxx0x.html" target="_blank">provides partial C++11 support</a>. Bjarne Stroustrup maintains a <a href="http://www.stroustrup.com/C++11FAQ.html" target="_blank">C++11 FAQ</a>.
\li The most recent public draft of the <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf" target="_blank"><b>Standard for Programming Language C++</b></a> was published in Feb. 2011.
\subsection protocols Positioning protocols in wireless communication networks
Cellular industry location standards first appeared in the late 1990s, with the <a href="http://www.3gpp.org/index.php" target="_blank">3rd generation partnership project (3GPP)</a> radio resource location services protocol (RRLP) technical specification 44.031 positioning protocol for GSM networks.
Today, RRLP is the de facto standardized protocol to carry GNSS assistance data to GNSS-enabled mobile devices, and the term "3GPP specification" now covers all GSM (including GPRS and EDGE),
W-CDMA and LTE (including LTE-A) specifications. Precisely, the label "LTE-A" is applied to networks compliant with LTE Release 10 and beyond, which fulfill the requirements issued by
the <a href="http://www.itu.int/en/ITU-R/Pages/default.aspx" target="_blank">International Telecommunication Union Radiocommunication Sector (ITU-R)</a> in the global standard for international mobile telecommunications (IMT Advanced, also referred to as 4G)
Cellular industry location standards first appeared in the late 1990s, with the <a href="http://www.3gpp.org/index.php" target="_blank">3rd generation partnership project (3GPP)</a> radio resource location services protocol (RRLP) technical specification 44.031 positioning protocol for GSM networks.
Today, RRLP is the de facto standardized protocol to carry GNSS assistance data to GNSS-enabled mobile devices, and the term "3GPP specification" now covers all GSM (including GPRS and EDGE),
W-CDMA and LTE (including LTE-A) specifications. Precisely, the label "LTE-A" is applied to networks compliant with LTE Release 10 and beyond, which fulfill the requirements issued by
the <a href="http://www.itu.int/en/ITU-R/Pages/default.aspx" target="_blank">International Telecommunication Union Radiocommunication Sector (ITU-R)</a> in the global standard for international mobile telecommunications (IMT Advanced, also referred to as 4G)
access technologies.
Control plane protocols:
@ -139,12 +139,12 @@ User plane protocols:
\li Open Mobile Alliance (OMA), <a href="http://member.openmobilealliance.org/ftp/Public_documents/LOC/Permanent_documents/OMA-AD-SUPL-V1_0-20070615-A.zip" target="_blank"><b>Secure User Plane Location Architecture Version 1 (SUPL 1.0)</b></a>, June 2007.
\li Open Mobile Alliance (OMA), <a href="http://member.openmobilealliance.org/ftp/Public_documents/LOC/Permanent_documents/OMA-AD-SUPL-V2_0-20120417-A.zip" target="_blank"><b>Secure User Plane Location Architecture Version 2 (SUPL 2.0)</b></a>, April 2012.
LTE Release 9 introduced extension hooks in LPP messages, so that the bodies external to 3GPP could extend the LPP feature set. OMA LPP extensions (LPPe), supported in SUPL 3.0, build on top of the 3GPP LPP reusing its procedures and data types.
LTE Release 9 introduced extension hooks in LPP messages, so that the bodies external to 3GPP could extend the LPP feature set. OMA LPP extensions (LPPe), supported in SUPL 3.0, build on top of the 3GPP LPP reusing its procedures and data types.
Check the <a href="http://technical.openmobilealliance.org/Technical/LOC.aspx" target="_blank">OMA Location Working Group (WG) webpage</a> for updated information about LPP Extensions (LPPe) Specification.
\li The <a href="http://technical.openmobilealliance.org/Technical/release_program/mlp_v31.aspx" target="_blank"><b>OMA Mobile Location Protocol (MLP) V3.1</b></a> is an application-level protocol for getting the position of mobile stations (mobile phones, wireless personal digital assistants, etc.) independent
of underlying network technology. The MLP serves as the interface between a Location Server and a Location Services (LCS) Client.
\li The <a href="http://technical.openmobilealliance.org/Technical/release_program/mlp_v31.aspx" target="_blank"><b>OMA Mobile Location Protocol (MLP) V3.1</b></a> is an application-level protocol for getting the position of mobile stations (mobile phones, wireless personal digital assistants, etc.) independent
of underlying network technology. The MLP serves as the interface between a Location Server and a Location Services (LCS) Client.
This specification defines the core set of operations that a Location Server should be able to perform.
*/
*/

View File

@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
/*! \page the_signal_model Signal model
@ -21,46 +21,46 @@
\section gnss_signal_model GNSS signal model
This page describes signals transmitted by GNSS space vehicles. Signal models are mathematical representations
of the electromagnetic waves that are exciting the receiver's antenna. The current induced by those waves is then amplified, filtered and downconverted to a suitable frequency (can be at some intermediate frequency or
of the electromagnetic waves that are exciting the receiver's antenna. The current induced by those waves is then amplified, filtered and downconverted to a suitable frequency (can be at some intermediate frequency or
directly to baseband), and then converted to 0s and 1s by the Analog-to-Digital Converter (ADC). That is the job of the Radio Frequency front-end, which at its output delivers a stream of
digital samples. Those samples constitute the input of a software receiver, so for GNSS-SDR the signal models described below can be seen as <i>the rules of the game</i>.
digital samples. Those samples constitute the input of a software receiver, so for GNSS-SDR the signal models described below can be seen as <i>the rules of the game</i>.
GNSS' space vehicles are modern versions of lighthouses, but with better visibility. Each satellite is a reference point, and if we know our distance to several reference points,
GNSS' space vehicles are modern versions of lighthouses, but with better visibility. Each satellite is a reference point, and if we know our distance to several reference points,
we can compute our location, just as mariners do when they see a couple of lighthouses. For each in-view satellite \f$i\f$ of system \f$s\f$, we can write:
\f{equation}{\label{eq:pseudorange}
\rho_i = \sqrt{ \left(x^{\text{Tx}}_i - x \right)^2 + \left(y^{\text{Tx}}_i - y \right)^2 + \left(z^{\text{Tx}}_i - z \right)^2}+c\Delta t^{(s)}+\sigma_{e},
\f}
where \f$\left(x^{\text{Tx}}_i, y^{\text{Tx}}_i, z^{\text{Tx}}_i\right)\f$ is the satellite's position (known from the navigation message), \f$(x,y,z)\f$ the receiver's position,
and \f$\sigma_e\f$ gathers other sources of error. Since the receiver needs to estimate its own 3D position (three spatial unknowns) and its clock deviation with respect to
the satellites' time basis, at least \f$3+N_s\f$ satellites must be seen by the receiver at the same time, where \f$N_s\f$ is the number of different navigation systems available
(in-view) at a given time. Each received satellite signal, once synchronized and demodulated at the receiver, defines one equation such as the one defined above,
forming a set of nonlinear equations that can be solved algebraically by means of the <a href="http://navipedia.org/index.php/Bancroft_Method" target="_blank">Bancroft algorithm</a> or
numerically, resorting to multidimensional Newton-Raphson and weighted least square methods. When <i>a priori</i> information is added we resort to Bayesian estimation, a problem
that can be solved recursively by a Kalman filter or any of its variants. The problem can be further expanded by adding other unknowns (for instance, parameters of ionospheric and
tropospheric models), sources of information from other systems, mapping information, and even motion models of the receiver. In the design of multi-constellation GNSS receivers,
the vector of unknowns can also include the receiver clock offset with respect to each system in order to take advantage of a higher number of in-view satellites and using them
where \f$\left(x^{\text{Tx}}_i, y^{\text{Tx}}_i, z^{\text{Tx}}_i\right)\f$ is the satellite's position (known from the navigation message), \f$(x,y,z)\f$ the receiver's position,
and \f$\sigma_e\f$ gathers other sources of error. Since the receiver needs to estimate its own 3D position (three spatial unknowns) and its clock deviation with respect to
the satellites' time basis, at least \f$3+N_s\f$ satellites must be seen by the receiver at the same time, where \f$N_s\f$ is the number of different navigation systems available
(in-view) at a given time. Each received satellite signal, once synchronized and demodulated at the receiver, defines one equation such as the one defined above,
forming a set of nonlinear equations that can be solved algebraically by means of the <a href="http://navipedia.org/index.php/Bancroft_Method" target="_blank">Bancroft algorithm</a> or
numerically, resorting to multidimensional Newton-Raphson and weighted least square methods. When <i>a priori</i> information is added we resort to Bayesian estimation, a problem
that can be solved recursively by a Kalman filter or any of its variants. The problem can be further expanded by adding other unknowns (for instance, parameters of ionospheric and
tropospheric models), sources of information from other systems, mapping information, and even motion models of the receiver. In the design of multi-constellation GNSS receivers,
the vector of unknowns can also include the receiver clock offset with respect to each system in order to take advantage of a higher number of in-view satellites and using them
jointly in the navigation solution, therefore increasing accuracy.
The <a href="http://en.wikipedia.org/wiki/Analytic_signal" target="_blank">analytic representation</a> of a signal received from a GNSS satellite can be generically expressed as
The <a href="https://en.wikipedia.org/wiki/Analytic_signal" target="_blank">analytic representation</a> of a signal received from a GNSS satellite can be generically expressed as
\f{equation}{\label{eq:analytic}
r(t)=\alpha(t) s_{T} \left(t-\tau(t)\right)e^{-j2 \pi f_d(t) }e^{j 2 \pi f_c t}+n(t)~,
\f}
where \f$\alpha(t)\f$ is the amplitude, \f$s_{T}(t)\f$ is the complex baseband transmitted signal, \f$\tau(t)\f$ is the time-varying delay, \f$f_d(t)=f_c \tau(t)\f$ is the Doppler shift, \f$f_c\f$ is
the carrier frequency, and \f$n(t)\f$ is a noise term. These signals arrive to the Earth's surface at extremely low power (e.g. \f$-158.5\f$ dBW for GPS L1 C/A-code, \f$-157\f$ dBW
for Galileo E1), well below the noise floor. In order to estimate its distances to satellites, the receiver must correlate time-aligned replicas of the corresponding pseudorandom
code with the incoming signal, in a process called <i>despreading</i> that provides processing gain only to the signal of interest. After a coarse and fine estimation stages of the
synchronization parameters (usually known as acquisition and tracking, respectively), signal processing output is in form of <i>observables</i>:
<i>i)</i> the pseudorange (code) measurement,
where \f$\alpha(t)\f$ is the amplitude, \f$s_{T}(t)\f$ is the complex baseband transmitted signal, \f$\tau(t)\f$ is the time-varying delay, \f$f_d(t)=f_c \tau(t)\f$ is the Doppler shift, \f$f_c\f$ is
the carrier frequency, and \f$n(t)\f$ is a noise term. These signals arrive to the Earth's surface at extremely low power (e.g. \f$-158.5\f$ dBW for GPS L1 C/A-code, \f$-157\f$ dBW
for Galileo E1), well below the noise floor. In order to estimate its distances to satellites, the receiver must correlate time-aligned replicas of the corresponding pseudorandom
code with the incoming signal, in a process called <i>despreading</i> that provides processing gain only to the signal of interest. After a coarse and fine estimation stages of the
synchronization parameters (usually known as acquisition and tracking, respectively), signal processing output is in form of <i>observables</i>:
<i>i)</i> the pseudorange (code) measurement,
equivalent to the difference of the time of reception (expressed
in the time frame of the receiver) and the time of transmission (expressed in the time frame of the satellite) of a distinct satellite signal; and optionally
in the time frame of the receiver) and the time of transmission (expressed in the time frame of the satellite) of a distinct satellite signal; and optionally
<i>ii)</i> the carrier-phase measurement, actually being a measurement on the beat frequency between the received carrier of the satellite signal and a receiver-generated reference frequency.
Carrier phase measurements are ambiguous, in the sense that the integer number of carrier wavelengths between satellite and the receiver's antenna is unknown.
Techniques such as <a href="http://www.citg.tudelft.nl/en/about-faculty/departments/geoscience-and-remote-sensing/research-themes/gps/lambda-method/" target="_blank">Least-square AMBiguity Decorrelation Approach (LAMBDA)</a> or
Multi Carrier Ambiguity Resolution (MCAR) can be applied to resolve such ambiguity and provide an accurate estimation of the distance between the satellite and the receiver.
<i>ii)</i> the carrier-phase measurement, actually being a measurement on the beat frequency between the received carrier of the satellite signal and a receiver-generated reference frequency.
Carrier phase measurements are ambiguous, in the sense that the integer number of carrier wavelengths between satellite and the receiver's antenna is unknown.
Techniques such as <a href="http://www.citg.tudelft.nl/en/about-faculty/departments/geoscience-and-remote-sensing/research-themes/gps/lambda-method/" target="_blank">Least-square AMBiguity Decorrelation Approach (LAMBDA)</a> or
Multi Carrier Ambiguity Resolution (MCAR) can be applied to resolve such ambiguity and provide an accurate estimation of the distance between the satellite and the receiver.
Then, depending on the required accuracy, the navigation solution can range from pseudorange-only, computationally low demanding, and limited accuracy least squares methods to sophisticated combinations of code and
Then, depending on the required accuracy, the navigation solution can range from pseudorange-only, computationally low demanding, and limited accuracy least squares methods to sophisticated combinations of code and
phase observables at different frequencies for high demanding applications such as surveying, geodesy, and geophysics.
@ -74,7 +74,7 @@ and civilian users on a continuous, worldwide basis. Two GPS services are provid
the Precise Positioning Service (PPS), available primarily to the military of the United
States and its allies, and the Standard Positioning Service (SPS) open to civilian users.
\li <b>GPS L1</b>. Defined at <a href="http://www.gps.gov/technical/icwg/IS-GPS-200F.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision F</b></a>, this band is centered at \f$f_{\text{GPS L1}}=1575.42\f$ MHz. The complex baseband transmitted signal can be written as
\li <b>GPS L1</b>. Defined at <a href="https://www.gps.gov/technical/icwg/IS-GPS-200F.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision F</b></a>, this band is centered at \f$f_{\text{GPS L1}}=1575.42\f$ MHz. The complex baseband transmitted signal can be written as
\f{equation}{
s^{\text{(GPS L1)}}_{T}(t)=e_{L1I}(t) + j e_{L1Q}(t)~,
\f}
@ -83,30 +83,30 @@ s^{\text{(GPS L1)}}_{T}(t)=e_{L1I}(t) + j e_{L1Q}(t)~,
e_{L1I}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{NAV}}\Big[ [l]_{204600}\Big] \oplus C_{\text{P(Y)}}\Big[ |l|_{L_{\text{P(Y)}}} \Big] p(t - lT_{c,\text{P(Y)}})~,\label{eq:L1CAI}\\
e_{L1Q}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{NAV}}\Big[ [l]_{20460} \Big] \oplus C_{\text{C/A}} \Big[ |l|_{1023} \Big] p(t - lT_{c,\text{C/A}})~,\label{eq:L1CA}
\f}
where \f$\oplus\f$ is the exclusive-or operation (modulo-2 addition), \f$|l|_{L}\f$ means \f$l\f$ modulo \f$L\f$, \f$[l]_{L}\f$ means the integer part of \f$\frac{l}{L}\f$,
\f$D_{\text{NAV}}\f$ is the GPS navigation message bit sequence, transmitted at \f$50\f$ bps, \f$T_{c,\text{P(Y)}}=\frac{1}{10.23}\f$ \f$\mu\f$s, \f$T_{c,\text{C/A}}=\frac{1}{1.023}\f$ \f$\mu\f$s,
\f$L_{\text{P(Y)}}=6.1871 \cdot 10^{12}\f$, and \f$p(t)\f$ is a rectangular pulse of a chip-period duration centered at \f$t=0\f$ and filtered at the transmitter.
According to the chip rate, the binary phase-shift keying modulations in the equations above are denoted as BPSK(10) and BPSK(1), respectively. The precision P codes (named Y codes whenever
the anti-spoofing mode is activated, encrypting the code and thus denying non-U.S. military users) are sequences of \f$7\f$ days in length. Regarding the modernization plans for GPS, it
is worthwhile to mention that there is a new civilian-use signal planned, called L1C and defined at <a href="http://www.gps.gov/technical/icwg/IS-GPS-800B.pdf" target="_blank"><b>Interface Specification IS-GPS-800 Revision B</b></a>,
to be broadcast on the same L1 frequency that currently contains the C/A signal. The L1C will be available with first Block III launch, currently scheduled for 2013. The implementation will
where \f$\oplus\f$ is the exclusive-or operation (modulo-2 addition), \f$|l|_{L}\f$ means \f$l\f$ modulo \f$L\f$, \f$[l]_{L}\f$ means the integer part of \f$\frac{l}{L}\f$,
\f$D_{\text{NAV}}\f$ is the GPS navigation message bit sequence, transmitted at \f$50\f$ bps, \f$T_{c,\text{P(Y)}}=\frac{1}{10.23}\f$ \f$\mu\f$s, \f$T_{c,\text{C/A}}=\frac{1}{1.023}\f$ \f$\mu\f$s,
\f$L_{\text{P(Y)}}=6.1871 \cdot 10^{12}\f$, and \f$p(t)\f$ is a rectangular pulse of a chip-period duration centered at \f$t=0\f$ and filtered at the transmitter.
According to the chip rate, the binary phase-shift keying modulations in the equations above are denoted as BPSK(10) and BPSK(1), respectively. The precision P codes (named Y codes whenever
the anti-spoofing mode is activated, encrypting the code and thus denying non-U.S. military users) are sequences of \f$7\f$ days in length. Regarding the modernization plans for GPS, it
is worthwhile to mention that there is a new civilian-use signal planned, called L1C and defined at <a href="http://www.gps.gov/technical/icwg/IS-GPS-800B.pdf" target="_blank"><b>Interface Specification IS-GPS-800 Revision B</b></a>,
to be broadcast on the same L1 frequency that currently contains the C/A signal. The L1C will be available with first Block III launch, currently scheduled for 2013. The implementation will
provide C/A code to ensure backward compatibility.
\li <b>GPS L2C</b>. Defined at <a href="http://www.gps.gov/technical/icwg/IS-GPS-200F.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision F</b></a>, is only available on
Block IIR-M and subsequent satellite blocks. Centered at \f$f_{\text{GPS L2}}=1227.60\f$ MHz, the signal structure is the same than in (\ref{eq:GPSL1}), with the precision code in the In-phase
\li <b>GPS L2C</b>. Defined at <a href="https://www.gps.gov/technical/icwg/IS-GPS-200F.pdf" target="_blank"><b>Interface Specification IS-GPS-200 Revision F</b></a>, is only available on
Block IIR-M and subsequent satellite blocks. Centered at \f$f_{\text{GPS L2}}=1227.60\f$ MHz, the signal structure is the same than in (\ref{eq:GPSL1}), with the precision code in the In-phase
component, just as in (\ref{eq:L1CAI}) but with an optional presence of the navigation message \f$D_{\text{NAV}}\f$. For the Quadrature-phase component, three options are defined:
\f{align}{ e_{L2CQ}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{CNAV}} \Big[ [l]_{10230} \Big] \oplus \left( C_{\text{CL}} \Big[ |l|_{L_{\text{CL}}} \Big] p_{\text{\tiny{1/2}}} \left( t - lT_{c,L2C} \right) + \right.\\ {} &+ \left. C_{\text{CM}} \Big[ |l|_{L_{\text{CM}}} \Big] p_{\text{\tiny{1/2}}}\left(t - \left(l+\frac{3}{4}\right)T_{c,L2C}\right) \right),\\
e_{L2CQ}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{NAV}} \Big[ [l]_{20460} \Big] \oplus C_{\text{C/A}} \Big[ |l|_{1023} \Big] p \left(t - lT_{c,\text{C/A}}\right) \text{, or}\\
e_{L2CQ}(t)=& \sum_{l=-\infty}^{\infty}C_{\text{C/A}} \Big[ |l|_{1023} \Big] p(t - lT_{c,\text{C/A}})~,
\f}
where \f$T_{c,L2C}=\frac{1}{511.5}\f$ ms and \f$p_{\text{\tiny{1/2}}}(t)\f$ is a rectangular pulse of half chip-period duration, thus time-multiplexing both codes. The civilian long
code \f$C_{\text{CL}}\f$ is \f$L_{\text{CL}}=767250\f$ chips long, repeating every \f$1.5\f$ s, while the civilian moderate code \f$C_{\text{CM}}\f$ is \f$L_{\text{CL}}=10230\f$ chips
long and its repeats every \f$20\f$ ms. The CNAV data is an upgraded version of the original NAV navigation message, containing higher precision representation and nominally more accurate
where \f$T_{c,L2C}=\frac{1}{511.5}\f$ ms and \f$p_{\text{\tiny{1/2}}}(t)\f$ is a rectangular pulse of half chip-period duration, thus time-multiplexing both codes. The civilian long
code \f$C_{\text{CL}}\f$ is \f$L_{\text{CL}}=767250\f$ chips long, repeating every \f$1.5\f$ s, while the civilian moderate code \f$C_{\text{CM}}\f$ is \f$L_{\text{CL}}=10230\f$ chips
long and its repeats every \f$20\f$ ms. The CNAV data is an upgraded version of the original NAV navigation message, containing higher precision representation and nominally more accurate
data than the NAV data. It is transmitted at \f$25\f$ bps with forward error correction (FEC) encoding, resulting in \f$50\f$ sps.
\li <b>GPS L5</b>. The GPS L5 link, defined at <a href="http://www.gps.gov/technical/icwg/IS-GPS-705B.pdf" target="_blank"><b>Interface Specification IS-GPS-705 Revision B</b></a>, is only available
\li <b>GPS L5</b>. The GPS L5 link, defined at <a href="https://www.gps.gov/technical/icwg/IS-GPS-705B.pdf" target="_blank"><b>Interface Specification IS-GPS-705 Revision B</b></a>, is only available
in Block IIF (first satellite launched on May, 2010) and subsequent satellite blocks. Centered at \f$f_{\text{GPS L5}}=1176.45\f$ MHz, this signal in space can be written as:
\f{equation}{
s^{\text{(GPS L5)}}_{T}(t)=e_{L5I}(t) +j e_{L5Q}(t)~,
@ -129,9 +129,9 @@ Eight satellites are equally spaced in each plane with \f$45^o\f$ argument of la
the orbital planes have an argument of latitude displacement of \f$15^o\f$ relative to each other.
GLONASS civil signal-in-space is defined at <a href="http://facility.unavco.org/data/docs/ICD_GLONASS_5.1_(2008)_en.pdf" target="_blank"><b>Interface Control Document. Navigational radiosignal in bands L1, L2. Edition 5.1</b></a>.
This system makes use of a frequency-division multiple access (FDMA) signal structure, transmitting in two bands: \f$f^{(k)}_{GLO L1}=1602+k \cdot 0.5625\f$ MHz and \f$f^{(k)}_{GLO L2}=1246+k \cdot 0.4375\f$ MHz,
where \f$k\in \left\{ -7,-6,\cdots,5,6\right\}\f$ is the channel number. Satellites in opposite points of an orbit plane transmit signals on equal frequencies, as these satellites will never be
GLONASS civil signal-in-space is defined at <a href="http://facility.unavco.org/data/docs/ICD_GLONASS_5.1_(2008)_en.pdf" target="_blank"><b>Interface Control Document. Navigational radiosignal in bands L1, L2. Edition 5.1</b></a>.
This system makes use of a frequency-division multiple access (FDMA) signal structure, transmitting in two bands: \f$f^{(k)}_{GLO L1}=1602+k \cdot 0.5625\f$ MHz and \f$f^{(k)}_{GLO L2}=1246+k \cdot 0.4375\f$ MHz,
where \f$k\in \left\{ -7,-6,\cdots,5,6\right\}\f$ is the channel number. Satellites in opposite points of an orbit plane transmit signals on equal frequencies, as these satellites will never be
in view simultaneously by a ground-based user.
@ -144,18 +144,18 @@ s^{\text{(GLO L1)}}_{T}(t)=e_{L1I}(t) + j e_{L1Q}(t)~,
e_{L1I}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{GNAV}}\Big[ [l]_{102200}\Big] \oplus C_{\text{HP}} \Big[ |l|_{L_{\text{HP}}} \Big] p(t - lT_{c,\text{HP}})~,\\
e_{L1Q}(t) =& \sum_{l=-\infty}^{\infty} D_{\text{GNAV}}\Big[ [l]_{10220} \Big] \oplus C_{\text{SP}} \Big[ |l|_{511} \Big] p(t - lT_{c,\text{SP}})~,
\f}
where \f$T_{c,\text{HP}}=\frac{1}{5.11}\f$ \f$\mu\f$s, \f$T_{c,\text{SP}}=\frac{1}{0.511}\f$ \f$\mu\f$s, and \f$L_{\text{HP}}=3.3554\cdot 10^7\f$. The navigation
message \f$D_{\text{GNAV}}\f$ is transmitted at \f$50\f$ bps. Details of its content and structure, as well as the generation of the \f$C_{\text{SP}}\f$ code, can be found at
the <a href="http://facility.unavco.org/data/docs/ICD_GLONASS_5.1_(2008)_en.pdf" target="_blank">ICD</a>. The usage of the HP signal should be agreed with the Russian Federation Defense
where \f$T_{c,\text{HP}}=\frac{1}{5.11}\f$ \f$\mu\f$s, \f$T_{c,\text{SP}}=\frac{1}{0.511}\f$ \f$\mu\f$s, and \f$L_{\text{HP}}=3.3554\cdot 10^7\f$. The navigation
message \f$D_{\text{GNAV}}\f$ is transmitted at \f$50\f$ bps. Details of its content and structure, as well as the generation of the \f$C_{\text{SP}}\f$ code, can be found at
the <a href="http://facility.unavco.org/data/docs/ICD_GLONASS_5.1_(2008)_en.pdf" target="_blank">ICD</a>. The usage of the HP signal should be agreed with the Russian Federation Defense
Ministry, and no more details have been disclosed.
\li <b>GLONASS L2</b>. Beginning with the second generation of satellites, called GLONASS-M and first launched in 2001, a second civil signal is available using the same SP code than the one in the L1 band.
The use of FDMA techniques, in which the same code is used to broadcast navigation signals on different frequencies, and the placement of civil GLONASS transmissions on frequencies close to \f$1600\f$ MHz,
well above the GPS L1 band, have complicated the design of combined GLONASS/GPS receivers, particularly low-cost equipment for mass-market applications. Future plans of modernization are
intended to increase compatibility and interoperability with other GNSS, and include the addition of a code-division multiple access (CDMA) structure, and possibly binary offset carrier (BOC)
modulation, beginning with the third civil signal in the L3 band (\f$1197.648 - 1212.255\f$ MHz). Russia is implementing the new signals on the next-generation GLONASS-K satellites, with a
The use of FDMA techniques, in which the same code is used to broadcast navigation signals on different frequencies, and the placement of civil GLONASS transmissions on frequencies close to \f$1600\f$ MHz,
well above the GPS L1 band, have complicated the design of combined GLONASS/GPS receivers, particularly low-cost equipment for mass-market applications. Future plans of modernization are
intended to increase compatibility and interoperability with other GNSS, and include the addition of a code-division multiple access (CDMA) structure, and possibly binary offset carrier (BOC)
modulation, beginning with the third civil signal in the L3 band (\f$1197.648 - 1212.255\f$ MHz). Russia is implementing the new signals on the next-generation GLONASS-K satellites, with a
first prototype successfully launched into orbit on February 26, 2011.
@ -173,9 +173,9 @@ period of \f$14\f$ hours. The Control segment full infrastructure will be compos
Galileo's Open Service is defined at <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf" target="_blank"><b>Signal In Space Interface Control Document. Ref: OS SIS ICD, Issue 1.1</b></a>, where the following signal structures are specified:
\li <b>Galileo E1</b>. This band, centered at \f$f_{\text{Gal E1}}=1575.420\f$ MHz and with a reference bandwidth of \f$24.5520\f$ MHz, uses the so-called composite binary offset carrier
\li <b>Galileo E1</b>. This band, centered at \f$f_{\text{Gal E1}}=1575.420\f$ MHz and with a reference bandwidth of \f$24.5520\f$ MHz, uses the so-called composite binary offset carrier
CBOC(6,1,\f$\frac{1}{11}\f$) modulation, defined in baseband as:
\f{align}{
\f{align}{
s^{\text{(Gal E1)}}_{T}(t)=&\frac{1}{\sqrt{2}} \Big( e_{E1B}(t)\left( \alpha sc_A(t)+ \beta sc_B(t) \right)+ \\
{}& - e_{E1C}(t) \left( \alpha sc_A(t)- \beta sc_B(t) \right) \Big)~,\label{eq:CBOC}
\f}
@ -192,8 +192,8 @@ In case of channel \f$C\f$, it is a pilot (dataless) channel with a secondary co
\f{align}{
\nonumber e_{E1C}(t)&= \sum_{m=-\infty}^{+\infty}C_{E1Cs}\Big[|m|_{25}\Big] \oplus \sum_{l=1}^{4092}C_{E1Cp}\Big[ l \Big] \cdot \\ {}& \; \; \cdot p(t-mT_{c,E1Cs}-lT_{c,E1Cp})~,\label{eq:E1C}
\f}
with \f$T_{c,E1B}=T_{c,E1Cp}=\frac{1}{1.023}\f$ \f$\mu\f$s and \f$T_{c,E1Cs}=4\f$ ms. The \f$C_{E1B}\f$ and \f$C_{E1Cp}\f$ primary codes are pseudorandom memory code sequences defined at
Annex C.7 and C.8 of <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf" target="_blank">OS SIS ICD</a>. The binary
with \f$T_{c,E1B}=T_{c,E1Cp}=\frac{1}{1.023}\f$ \f$\mu\f$s and \f$T_{c,E1Cs}=4\f$ ms. The \f$C_{E1B}\f$ and \f$C_{E1Cp}\f$ primary codes are pseudorandom memory code sequences defined at
Annex C.7 and C.8 of <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf" target="_blank">OS SIS ICD</a>. The binary
sequence of the secondary code \f$C_{E1Cs}\f$ is 0011100000001010110110010. This band also contains another component, Galileo E1A, intended for the Public Regulated Service (PRS).
It uses a BOC(15,2.5) modulation with cosine-shaped subcarrier \f$f_{s,E1A}=15.345\f$ MHz and \f$T_{c, E1A}=\frac{1}{2.5575}\f$ \f$\mu\f$s.
The PRS spreading codes and the structure of the navigation message have not been made public.
@ -207,19 +207,19 @@ s_{T}^{\text{(Gal E6)}}(t) = \frac{1}{\sqrt{2}}\left(e_{E6B}(t)-e_{E6C}(t)\right
\nonumber e_{E6B}(t) =& \sum_{m=-\infty}^{+\infty} D_{\text{C/NAV}} \Big[ [l]_{5115}\Big] \oplus C_{E6B}\Big[|l|_{L_{E6B}}\Big] \cdot \\ {}& \cdot p(t - lT_{c,E6}),\\
\nonumber e_{E6C}(t) =& \sum_{m=-\infty}^{+\infty}C_{E6Cs}\Big[|m|_{100}\Big] \oplus \sum_{l=1}^{L_{E6C}}C_{E6Cp}\Big[ l \Big] \cdot \\ {}& \cdot p(t-mT_{c,E6s} -lT_{c,E6p}),
\f}
where \f$D_{\text{C/NAV}}\f$ is the C/NAV navigation data stream, which is modulated with the encrypted ranging code \f$C_{E6B}\f$ with chip period \f$T_{c,E6}=\frac{1}{5.115}\f$ \f$\mu\f$s, thus
being a BPSK(5) modulation. Codes \f$C_{E6B}\f$ and primary codes \f$C_{E6Cs}\f$ and their respective lengths, \f$L_{E6B}\f$ and \f$L_{E6C}\f$, have not been published. The secondary codes
for the pilot component, \f$C_{E6Cs}\f$, are available at the <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf" target="_blank">OS SIS ICD</a>.
where \f$D_{\text{C/NAV}}\f$ is the C/NAV navigation data stream, which is modulated with the encrypted ranging code \f$C_{E6B}\f$ with chip period \f$T_{c,E6}=\frac{1}{5.115}\f$ \f$\mu\f$s, thus
being a BPSK(5) modulation. Codes \f$C_{E6B}\f$ and primary codes \f$C_{E6Cs}\f$ and their respective lengths, \f$L_{E6B}\f$ and \f$L_{E6C}\f$, have not been published. The secondary codes
for the pilot component, \f$C_{E6Cs}\f$, are available at the <a href="http://ec.europa.eu/enterprise/policies/satnav/galileo/files/galileo-os-sis-icd-issue1-revision1_en.pdf" target="_blank">OS SIS ICD</a>.
The receiver reference bandwidth for this signal is \f$40.920\f$ MHz. This band also contains another component, Galileo E6A, intended for PRS.
\li <b>Galileo E5</b>. Centered at \f$f_{\text{Gal E5}}=1191.795\f$ MHz and with a total bandwidth of \f$51.150\f$ MHz, its signal structure deserves some analysis. The AltBOC modulation can be generically expressed as
\f{equation}{\label{AltBOC}
s^{\text{AltBOC}}(t)=x_1(t)v^{*}(t)+x_2(t)v(t)~,
\f}
where \f$v(t)=\frac{1}{\sqrt{2}}\left( \text{sign}\left( \cos (2 \pi f_s t)\right)+j \text{sign}\left( \sin (2 \pi f_s t)\right)\right)\f$ is the single side-band
subcarrier, \f$f_s\f$ is the subcarrier frequency, \f$(\cdot)^{*}\f$ stands for the conjugate operation, and \f$x_1(t)\f$ and \f$x_2(t)\f$ are QPSK signals.
The resulting waveform does not exhibit constant envelope. In case of Galileo, the need for high efficiency of the satellites' onboard High Power Amplifier (HPA) has pushed
a modification on the signal in order to make it envelope-constant and thus use the HPA at saturation. This can be done by adding some inter-modulation products to the expression
where \f$v(t)=\frac{1}{\sqrt{2}}\left( \text{sign}\left( \cos (2 \pi f_s t)\right)+j \text{sign}\left( \sin (2 \pi f_s t)\right)\right)\f$ is the single side-band
subcarrier, \f$f_s\f$ is the subcarrier frequency, \f$(\cdot)^{*}\f$ stands for the conjugate operation, and \f$x_1(t)\f$ and \f$x_2(t)\f$ are QPSK signals.
The resulting waveform does not exhibit constant envelope. In case of Galileo, the need for high efficiency of the satellites' onboard High Power Amplifier (HPA) has pushed
a modification on the signal in order to make it envelope-constant and thus use the HPA at saturation. This can be done by adding some inter-modulation products to the expression
above, coming up with the following definition:
\f{align}{
@ -260,9 +260,9 @@ receiver. The single subcarrier \f$sc_s(t)\f$ and the product subcarrier \f$sc_p
sc_p(t)=& -\frac{\sqrt{2}}{4}\text{sign} \left( \cos \left( 2 \pi f_s t - \frac{\pi}{4}\right) \right)+\\ \nonumber {}&+ \frac{1}{2}\text{sign} \Big( \cos \left( 2 \pi f_s t \right) \Big)+\\
{} &-\frac{\sqrt{2}}{4}\text{sign} \left( \cos \left( 2 \pi f_s t + \frac{\pi}{4}\right) \right)~,
\f}
with a subcarrier frequency of \f$f_s=15.345\f$ MHz, thus defining an AltBOC(15,10) modulation. The QPSK(10) signal \f$e_{E5a}(t)\f$ defined above is shifted
with a subcarrier frequency of \f$f_s=15.345\f$ MHz, thus defining an AltBOC(15,10) modulation. The QPSK(10) signal \f$e_{E5a}(t)\f$ defined above is shifted
to \f$f_{\text{Gal E5a}}\doteq f_{\text{Gal E5}}-f_s=1176.450\f$ MHz, while \f$e_{E5b}(t)\f$ is shifted to \f$f_{\text{Gal E5b}}\doteq f_{\text{Gal E5}}+f_s=1207.140\f$ MHz.
Thus, we can bandpass filter around \f$f_{\text{Gal E5a}}\f$ and get a good approximation of a QPSK(10) signal, with very low energy components of \f$e_{E5b}(t)\f$, \f$ \bar{e}_{E5a}(t)\f$,
Thus, we can bandpass filter around \f$f_{\text{Gal E5a}}\f$ and get a good approximation of a QPSK(10) signal, with very low energy components of \f$e_{E5b}(t)\f$, \f$ \bar{e}_{E5a}(t)\f$,
and \f$ \bar{e}_{E5b}(t)\f$:
\f{equation}{
s_{T}^{\text{(Gal E5a)}}(t) \simeq e_{E5aI}(t)+je_{E5aQ}(t).
@ -273,9 +273,9 @@ The same applies to \f$e_{E5b}(t)\f$, allowing an independent reception of two Q
This text is an except of the following paper:
\li C. Fern&aacute;ndez-Prades, L. Lo Presti, E. Falleti, <a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=5942139" target="_blank"><i>Satellite Radiolocalization From GPS to GNSS and Beyond: Novel Technologies and Applications for Civil Mass-Market</i></a>.
\li C. Fern&aacute;ndez-Prades, L. Lo Presti, E. Falleti, <a href="https://ieeexplore.ieee.org/document/5942139/" target="_blank"><i>Satellite Radiolocalization From GPS to GNSS and Beyond: Novel Technologies and Applications for Civil Mass-Market</i></a>.
Proceedings of the IEEE. Vol 99, No. 11, pp. 1882-1904. November, 2011. DOI: 10.1109/JPROC.2011.2158032
*/
*/

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@ -1,4 +1,4 @@
# Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
add_subdirectory(algorithms)

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@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
add_subdirectory(acquisition)

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@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
add_subdirectory(adapters)

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@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
set(PVT_ADAPTER_SOURCES

View File

@ -5,7 +5,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -5,7 +5,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
set(PVT_GR_BLOCKS_SOURCES

View File

@ -5,7 +5,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -5,7 +5,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
add_definitions( -DGNSS_SDR_VERSION="${VERSION}" )

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -10,7 +10,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -28,7 +28,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -10,7 +10,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -28,7 +28,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -5,7 +5,7 @@
* \author Carles Fernandez Prades, 2011. cfernandez(at)cttc.es
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -25,7 +25,7 @@
* \author Carles Fernandez Prades, 2011. cfernandez(at)cttc.es
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -43,7 +43,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
add_subdirectory(adapters)

View File

@ -1,4 +1,4 @@
# Copyright (C) 2012-2015 (see AUTHORS file for a list of contributors)
# Copyright (C) 2012-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
@ -13,7 +13,7 @@
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
#
@ -39,7 +39,7 @@ set(ACQ_ADAPTER_SOURCES
if(ENABLE_FPGA)
set(ACQ_ADAPTER_SOURCES ${ACQ_ADAPTER_SOURCES} gps_l1_ca_pcps_acquisition_fpga.cc)
endif(ENABLE_FPGA)
if(OPENCL_FOUND)
set(ACQ_ADAPTER_SOURCES ${ACQ_ADAPTER_SOURCES} gps_l1_ca_pcps_opencl_acquisition.cc)
endif(OPENCL_FOUND)
@ -64,6 +64,5 @@ include_directories(
file(GLOB ACQ_ADAPTER_HEADERS "*.h")
list(SORT ACQ_ADAPTER_HEADERS)
add_library(acq_adapters ${ACQ_ADAPTER_SOURCES} ${ACQ_ADAPTER_HEADERS})
source_group(Headers FILES ${ACQ_ADAPTER_HEADERS})
source_group(Headers FILES ${ACQ_ADAPTER_HEADERS})
target_link_libraries(acq_adapters gnss_sp_libs gnss_sdr_flags acq_gr_blocks ${Boost_LIBRARIES} ${GNURADIO_RUNTIME_LIBRARIES} ${GNURADIO_BLOCKS_LIBRARIES})

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -12,7 +12,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -30,7 +30,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -12,7 +12,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -30,7 +30,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -23,7 +23,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -7,7 +7,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -25,7 +25,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -7,7 +7,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -25,7 +25,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -10,7 +10,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -28,7 +28,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -10,7 +10,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -28,7 +28,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -9,7 +9,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -27,7 +27,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -11,7 +11,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -29,7 +29,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -11,7 +11,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -29,7 +29,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -9,7 +9,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -27,7 +27,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -7,7 +7,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -25,7 +25,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -7,7 +7,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -25,7 +25,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -6,7 +6,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -24,7 +24,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

View File

@ -8,7 +8,7 @@
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -26,7 +26,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/

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