Adds GLONASS L2 C/A signal processing to GNSS-SDR based on previous
work developed for the L1 signal. All code have been added in a single
commit with the idea to illustrate the process of signal addition for
future work
Using C++ 11 threading routines to create a worker thread that can
perform the FFT for acquisition in a non-blocking manner. By default
'blocking' is set to true, which is identical to the previous behaviour
(with the added overhead of an extra thread). When 'blocking' is set to
false, then the main thread does not wait for the worker, thereby
letting the receiver continue even when the FFT thread is working. This
is very useful for using FFT acquisition at higher sampling rates, where
the FFT cannot be performed in real-time.
The aim is to replace the separate pcps_multithread_acquisition_cc.
TODO: implement the same thing for the pcps_acquisition_sc
GNSS-SDR.internal_fs_sps
The old name was misleading, since the units are samples per second and
not Hertz.
Backward compatibility is kept, so this change does not break any
existing configuration.
Starts merging process of the acquisition and tracking code for GLONASS
processing developed by Gabriel Araujo. Fixes compile warnings and
errors introduced during rebase operation
Packages using CMake often use file(GLOB ...) to retrieve a list of
source files. As this is based on readdir(), the resulting file list
is unsorted. A common use case is to pass this list directly to
add_executable or add_library. But as the order is unpredictable, the
binaries are not reproducible (because the order in which the objects
are linked will vary).
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824263
Change the initialization of max_dwells in pcps acquisition adpaters
due its value is forced to be 1 in gr_block constructor if boolean
"bit_transition_flag" is set to TRUE
Resolves: #24
Rename "shift_resolution_" variable in some Acquisition adapters to
"doppler_max_" according to its meaning and change "ifreq" to "if"
because the value was not properly read. Delete unused variables.
Resolves: #23
message system. Removing the deprecated channel internal queue and its
references. Some tests that are using the old channel queue are disabled
in this version
the post correlation noise floor. If enabled
(.Acquisition_1C.use_CFAR_algorithm=true) as an option in the
acquisition configuration, it allows setting more stable thresholds in
the presence of non-gaussian front-end noise (which is the usual
behavior of front-ends....)
in PCPS_Acquisition (added the _sc variant). Now the PCPS acquisiton
adapter requires no conversion when the receiver works with 16 bits
integer complex samples.
Reduced zero_padding_factor in pcps acquisition
This was 16, I'm processing data at about 16MHz, this oversampling
factor caused memory allocation issues
Previously dump file name was not being read from the configuration
Added fix for non-zero IF in pcps_acquisition_cc
Added linear correlation to pcps acquisition.
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# the commit.
Bug fix in galileo tracking
Several improvements in Galileo telemetry decoder.
Code cleaning in observables
Galileo PVT is able to decode Galileo time and get satellite ECEF positions
Galileo PVT soluton is still under development
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@432 64b25241-fba3-4117-9849-534c7e92360d
gps_l1_ca_pcps_multithread_acquisition
gps_l1_ca_pcps_tong_acquisition
galileo_e1_pcps_cccwsr_ambiguous_acquisition
galileo_e1_pcps_tong_ambiguous_acquisition
galileo_e1_pcps_8ms_ambiguous_acquisition
and test for all the algorithms.
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@411 64b25241-fba3-4117-9849-534c7e92360d
- Some channel and acquisition properties are now common for all channels
- You can choose between channel-specific properties or properties common to all
- Updating config file with the new options
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@360 64b25241-fba3-4117-9849-534c7e92360d
1) Galileo E1 Acquisition adapter block added (Gnuradio block modification to use the same block with the 2 systems with 2 adapters)
2) Tests and signal samples for Galileo E1 Acquisition signal block
3) Library for Galileo E1 signal processing
4) Galileo_E1.h with constant variables for this system
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@209 64b25241-fba3-4117-9849-534c7e92360d
- Fir_Filter implementation for InputFilter block in SignalConditioner
- Tests for InputFilter and Resampler
- Fixed some bugs
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@176 64b25241-fba3-4117-9849-534c7e92360d
- The executable file and the default configuration file is now changed from "./install/mercurio" and "./conf/mercurio.conf" to "./install/gnss-sdr" and "./conf/gnss-sdr.conf", respectively.
- Configuration file structure changed to define in a single entry the internal sampling frequency (after the signal conditioner). NOTICE that this change affects the all the adapters (acquisition, tracking, telemetry_decoder, observables, and PVT). All the adapters are now modified to work with this feature.
- Moved several in-line GPS L1 CA parameters (a.k.a magic numbers..) to ./src/core/system_parameters/GPS_L1_CA.h definition file.
- Tracking blocks now uses DOUBLE values in their outputs.
- Observables and PVT now are separated. PVT and their associated libraries are moved to ./src/algorithms/PVT
- Temporarily disabled the RINEX output (I am working on that!)
- GNSS-SDR screen output now gives extended debug information of the receiver status and events. In the future, this output will be redirected to a log file.
- Bug fixes:
- FILE_SIGNAL_SOURCE now works correctly when the user configures GNSS-SDR to process the entire file.
- GPS_L1_CA_DLL_PLL now computes correctly the PRN start values.
- GPS_L1_CA_DLL_FLL_PLL now computes correctly the PRN start values.
- Several modifications in GPS_L1_CA_Telemetry_Decoder, GPS_L1_CA_Observables, and GPS_L1_CA_PVT modules to fix the GPS position computation.
- New features
- Tracking blocks perform a signal integrity check against NaN outliers before the correlation process.
- Tracking and PVT binary dump options are now documented and we provide MATLAB libraries and sample files to read it. Available in ./utils/matlab" and "./utils/matlab/libs"
- Observables output rate can be configured. This option enables the GPS L1 CA PVT computation at a maximum rate of 1ms.
- GPS_L1_CA_PVT now can perform a moving average Latitude, Longitude, and Altitude output for each of the Observables output. It is configurable using the configuration file.
- Added Google Earth compatible Keyhole Markup Language (KML) output writer class (./src/algorithms/PVT/libs/kml_printer.h and ./src/algorithms/PVT/libs/kml_printer.cc ). You can see the receiver position directly using Google Earth.
- We provide a master configuration file which includes an in-line documentation with all the new (and old) options. It can be found in ./conf/master.conf
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@84 64b25241-fba3-4117-9849-534c7e92360d
