mirror of
https://github.com/gnss-sdr/gnss-sdr
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![Carles Fernandez](/assets/img/avatar_default.png)
Replace GPSTK by the newer GNSSTk C++ Library, with backward compatibility. Works from GPSTK 3.0 to GNSSTk 12.1.0
1543 lines
77 KiB
Markdown
1543 lines
77 KiB
Markdown
<!-- prettier-ignore-start -->
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||
[comment]: # (
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SPDX-License-Identifier: GPL-3.0-or-later
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)
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[comment]: # (
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SPDX-FileCopyrightText: 2011-2022 Carles Fernandez-Prades <carles.fernandez@cttc.es>
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)
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<!-- prettier-ignore-end -->
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# Changelog
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All notable changes to GNSS-SDR will be documented in this file.
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## [Unreleased](https://github.com/gnss-sdr/gnss-sdr/tree/next)
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### Improvements in Availability:
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- Fixed bug that made the PVT block to not resolve position anymore after a loss
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of samples event.
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### Improvements in Interoperability:
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- Enabled PVT computation in the Galileo E5a + E5b receiver. Observables
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reported in the RINEX file.
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- Fixed PVT computation in the Galileo E5b-only receiver.
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- Get E6B observables and PVT solutions in the Galileo E1B + E6B receiver.
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Decoding of HAS messages as described in the
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[HAS SIS ICD v1.0](https://www.gsc-europa.eu/sites/default/files/sites/all/files/Galileo_HAS_SIS_ICD_v1.0.pdf).
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Generation of RTCM 3.2 messages from the received HAS messages in the
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[IGS State Space Representation (SSR) Format](https://files.igs.org/pub/data/format/igs_ssr_v1.pdf).
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Specifically, it generates messages of type IGM01 (SSR Orbit Correction),
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IGM02 (SSR Clock Correction), IGM03 (SSR Combined Orbit and Clock Correction),
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and IGM05 (SSR Code Bias). Please note that the content of the HAS messages is
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**not** applied to the computed PVT solution. In the Galileo E6B-only
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receiver, HAS messages are decoded and reported.
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### Improvements in Maintainability:
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- The now archived [GPSTk toolkit](https://github.com/SGL-UT/GPSTk), used in
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some optional tests and applications, has been replaced by the new
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[GNSSTk](https://github.com/SGL-UT/gnsstk) C++ Library. Compatibility with the
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former GPSTk toolkit is maintained.
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||
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### Improvements in Portability:
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||
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||
- Improved detection of the BLAS library under macOS / Macports (the `lapack`
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port dependency installed with the `+openblas` variant does not install `blas`
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but `openblas`, which is used as a replacement if `blas` is not found).
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- Removed duplicated files in the Secure User Plane Location implementation,
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which caused issues when linking with some compilers.
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- Added support for Xilinx's Zynq UltraScale+ devices (requires the
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`-DENABLE_FPGA=ON` building option).
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- Fixed running time error if the binary is built with the
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`-Wp,-D_GLIBCXX_ASSERTIONS` compiler option. This is added by default in some
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GNU/Linux distributions.
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||
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### Improvements in Usability:
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||
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||
- Fixed large GLONASS velocity errors and the extended correlator when using the
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`GLONASS_L1_CA_DLL_PLL_C_Aid_Tracking` and
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`GLONASS_L2_CA_DLL_PLL_C_Aid_Tracking` implementations.
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- Added a over-the-wire sample format (that is, the format used between the
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device and the UHD) configuration parameter for the `UHD_Signal_Source`, thus
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allowing to select the `sc8` format instead of the default `sc16`. This would
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reduce the dynamic range and increase quantization noise, but also reduce the
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load on the data link and thus allow more bandwidth.
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- Added gain setting and reading for the XTRX board when using the
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`Osmosdr_Signal_Source` implementation of a `SignalSource`.
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- The `Osmosdr_Signal_Source` implementation learned a new parameter `if_bw` to
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manually set the bandwidth of the bandpass filter on the radio frontend.
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See the definitions of concepts and metrics at
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https://gnss-sdr.org/design-forces/
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## [GNSS-SDR v0.0.17](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.17) - 2022-04-20
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[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.6473244.svg)](https://doi.org/10.5281/zenodo.6473244)
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### Improvements in Availability:
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||
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- Compute PVT solutions when using GPS L5 signals even if the satellite is
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reported as not healthy in the CNAV message.
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### Improvements in Portability:
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||
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- Updated `cpu_features` library to v0.7.0. The building option
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`ENABLE_OWN_CPUFEATURES` has been replaced by `ENABLE_CPUFEATURES`, defaulting
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to `ON`.
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- Fixed building against GNU Radio v3.10.2.0.
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### Improvements in Reliability:
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- Fix some defects detected by Coverity Scan 2021.12.1.
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### Improvements in Usability:
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- Added a script at `src/utils/scripts/download-galileo-almanac.sh` that
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downloads an XML file with the latest Galileo almanac published by the
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European GNSS Service Centre at https://www.gsc-europa.eu/product-almanacs
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See the definitions of concepts and metrics at
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https://gnss-sdr.org/design-forces/
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## [GNSS-SDR v0.0.16](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.16) - 2022-02-15
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[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.6090349.svg)](https://doi.org/10.5281/zenodo.6090349)
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|
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### Improvements in Availability:
|
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- Added the Galileo E5b receiving chain. The software is now able to compute PVT
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solutions as a standalone Galileo E5b receiver.
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- Improved Time-To-First-Fix when using GPS L1 C/A signals, fixing a bug that
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was making the receiver to drop the satellite if the PLL got locked at 180
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degrees, and making some optimizations on bit transition detection.
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- Fixed a bug that prevented from obtaining PVT fixes with Galileo E1 OS signals
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if the I/NAV subframe type 0 was the first decoded subframe.
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### Improvements in Interoperability:
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- Fixed setting of the signal source gain if the AGC is enabled when using the
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AD9361 front-end.
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- Fixed the regeneration of Galileo ephemeris from the reduced clock and
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ephemeris data (CED) defined in the Galileo E1B INAV message introduced in
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Galileo OS SIS ICD Issue 2.0.
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- Added a `Limesdr_Signal_Source` for interoperability with LimeSDR (requires
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[gr-limesdr](https://github.com/myriadrf/gr-limesdr) and the
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`-DENABLE_LIMESDR=ON` building flag).
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### Improvements in Maintainability:
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- Rewritten Viterbi decoder for Galileo navigation messages. Encapsulated in a
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class instead of being implemented as free inline functions. This improves
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memory management and source code readability.
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- Prefer initialization to assignment in constructors. This improves the
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readability of the code, could potentially increase performance, and allows
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for easier detection of unused data members (see the
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[CppCoreGuidelines](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md/#Rc-initialize)).
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Added the `cppcoreguidelines-prefer-member-initializer` clang-tidy check to
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enforce this policy.
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- Non-functional change: Fixed formatting defects detected by clang-format 13.0.
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- Non-functional change: Simplified flow graph disconnection.
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- Updated GSL implementation to v0.40.0. See the
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[gsl-lite release](https://github.com/gsl-lite/gsl-lite/releases/tag/v0.40.0).
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- CI - `cpplint` job on GitHub: Added the `build/include_what_you_use` filter
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for early detection of missing includes.
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- CI - `clang-tidy` job on GitHub: More robust detection of LLVM paths installed
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by homebrew.
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### Improvements in Portability:
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- Fixed building against the new API in the gr-iio component present in GNU
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Radio v3.10.X.Y.
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- Fixed building against GNU Radio v3.10.X.Y, which does not support the C++20
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standard.
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- Fixed building against GNU Radio v3.10.X.Y, which replaced
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[log4cpp](http://log4cpp.sourceforge.net/) by the
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[spdlog](https://github.com/gabime/spdlog) and
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[fmt](https://github.com/fmtlib/fmt) libraries.
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- Updated `cpu_features` library for improved processor detection.
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### Improvements in Reliability:
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- Fixed some potential buffer overflows.
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- Avoid source code lines longer than 512 characters. This was a warning raised
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by Lintian (very-long-line-length-in-source-file). Long lines in source code
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could be used to obfuscate the source code and to hide stuff like backdoors or
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security problems.
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### Improvements in Usability:
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- Added a new monitor to extract the decoded data bits of the navigation
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messages and send them elsewhere via UDP. Activated by setting
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`NavDataMonitor.enable_monitor=true`,
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`NavDataMonitor.client_addresses=127.0.0.1` and `NavDataMonitor.port=1237` in
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the configuration file. Format described in the `nav_message.proto` file. A
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simple listener application written in C++ is included in
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`src/utils/nav-listener` as an example.
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- Extract successful rate of the CRC check in the decoding of navigation
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messages. This can be enabled by setting
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`TelemetryDecoder_XX.dump_crc_stats=true` and, optionally,
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`TelemetryDecoder_XX.dump_crc_stats_filename=./crc_stats` in the configuration
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file. At the end of the processing (or exiting with `q` + `[Enter]`), the CRC
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check success rate will be reported in a file.
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- The `UHD_Signal_Source` learned to dump data in folders that do not exist,
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_e.g._, if `SignalSource.dump=true`,
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`SignalSource.dump_filename=./non-existing/data.dat`, and the `non-existing`
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folder does not exist, it will be created if the running user has writing
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permissions. This also works for absolute paths.
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- Added a new configuration parameter `PVT.rtk_trace_level` that sets the
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logging verbosity level of the RTKLIB library.
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- Added a new output parameter `Flag_PLL_180_deg_phase_locked` in the monitor
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output that indicates if the PLL got locked at 180 degrees, so the symbol sign
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is reversed.
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- Fixed a bug in the satellite selection algorithm for configurations with a
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large number of channels. The maximum number of channels per signal is now
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limited to the number of available satellites per system minus one. The number
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of channels performing concurrent acquisition, `Channels.in_acquisition`,
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cannot be larger than the total number of channels. The program will stop if
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those requirements are not met in the configuration file.
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- Fixed program termination when using `File_Signal_Source` and extended
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integration times.
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- The `Fifo_Signal_Source` Signal Source implementation learned to handle the
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`ibyte` type.
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- Added a `CITATION.cff` file.
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- Updated version of the Contributor Covenant to version 2.1.
|
||
|
||
See the definitions of concepts and metrics at
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||
https://gnss-sdr.org/design-forces/
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|
||
|
||
|
||
## [GNSS-SDR v0.0.15](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.15) - 2021-08-23
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.5242839.svg)](https://doi.org/10.5281/zenodo.5242839)
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Added the reading of reduced clock and ephemeris data (CED) in the Galileo E1B
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INAV message introduced in Galileo OS SIS ICD Issue 2.0. If the reduced CED is
|
||
available before the full ephemeris set, it is used for PVT computation until
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||
the full set has not yet been received. This can contribute to shortening the
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||
Time-To-First-Fix. Still experimental.
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||
- Added the exploitation of the FEC2 Erasure Correction in the Galileo E1B INAV
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||
message introduced in Galileo OS SIS ICD Issue 2.0. This can contribute to
|
||
shortening the Time-To-First-Fix. Since the added computational cost could
|
||
break some real-time configurations, this feature is disabled by default. It
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||
can be activated from the configuration file by adding
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||
`TelemetryDecoder_1B.enable_reed_solomon=true`.
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- Reduction of the TTFF in GPS L1 and Galileo E1 by improving the frame
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synchronization mechanism.
|
||
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||
### Improvements in Maintainability:
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||
|
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- The Contributor License Agreement (CLA) signing for new contributors has been
|
||
replaced by a
|
||
[Developer's Certificate of Origin (DCO)](https://github.com/gnss-sdr/gnss-sdr/blob/next/.github/DCO.txt),
|
||
which implies that contributed commits in a pull request need to be signed as
|
||
a manifestation that contributors have the right to submit their work under
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||
the open source license indicated in the contributed file(s) (instead of
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asking them to sign the CLA document).
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||
- Improved handling of changes in GNU Radio 3.9 FFT API.
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||
- Improved handling of the filesystem library.
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||
- Added an abstract class `SignalSourceInterface` and a common base class
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||
`SignalSourceBase`, which allow removing a lot of duplicated code in Signal
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Source blocks, and further abstract file-based interfaces behind them.
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||
- Do not apply clang-tidy fixes to protobuf-generated headers.
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||
- Refactored private implementation of flow graph connection and disconnection
|
||
for improved source code readability.
|
||
- Added a base class for GNSS ephemeris, saving some duplicated code and
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||
providing a common nomenclature for ephemeris' parameters. New generated XML
|
||
files make use of the new parameters' names.
|
||
- Update GSL implementation to 0.38.1. See
|
||
https://github.com/gsl-lite/gsl-lite/releases/tag/v0.38.1
|
||
- Update references to the latest GPS ICDs (IS-GPS-200M, IS-GPS-800H,
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IS-GPS-705H) published in May, 2021.
|
||
|
||
### Improvements in Portability:
|
||
|
||
- Avoid collision of the `cpu_features` library when installing the
|
||
`volk_gnsssdr` library on its own, and VOLK has already installed its version.
|
||
Added a new building option `ENABLE_OWN_CPUFEATURES`, defaulting to `ON` when
|
||
building `gnss-sdr` but defaulting to `OFF` when building a stand-alone
|
||
version of `volk_gnsssdr`. When this building option is set to `ON`, it forces
|
||
the building of the local version of the `cpu_features` library, regardless of
|
||
whether it is already installed or not.
|
||
- CMake's `<policy_max>` version bumped to 3.21. The minimum CMake version is
|
||
2.8.12.
|
||
- Fix building when using the Xcode generator, Xcode >= 12 and CMake >= 3.19.
|
||
- Fix building of FPGA blocks when linking against GNU Radio >= 3.9 and/or
|
||
Boost >= 1.74.
|
||
- Fix linking of the `<filesystem>` library when using GCC 8.x and GNU Radio >=
|
||
3.8.
|
||
- If the Matio library is not found, now it is configured and built by CMake
|
||
instead of using autotools.
|
||
- Added support for Apple M1 AArch64 architecture processor and for FreeBSD on
|
||
x86, improved AMD microarchitecture detection.
|
||
- CMake now selects the C++23 standard if the environment allows for it.
|
||
- Improved detection of Gnuplot and `gnss_sim` when cross-compiling.
|
||
- NEON kernel implementations of the `volk_gnsssdr` library are now enabled in
|
||
aarch64 architectures.
|
||
|
||
### Improvements in Reliability
|
||
|
||
- Bug fix in the Galileo E1/E5 telemetry decoder that produced incorrect timing
|
||
information if a satellite is lost and then readquired.
|
||
- Check satellites' health status. If a satellite is marked as not healthy in
|
||
its navigation message, the corresponding observables are not used for
|
||
navigation.
|
||
|
||
### Improvements in Usability:
|
||
|
||
- Added a new `Fifo_Signal_Source` implementation that allows using a
|
||
[Unix FIFO](https://en.wikipedia.org/wiki/Named_pipe) as a signal source, thus
|
||
allowing to multiplex signal streams outside of `gnss-sdr`, letting another
|
||
program hold access to the receiver, or allowing signal sources that are not
|
||
supported by `gnss-sdr` but can dump the signal to a FIFO.
|
||
- Avoid segmentation faults in the flow graph connection and/or starting due to
|
||
some common inconsistencies in the configuration file.
|
||
- Provide hints to the user in case of failed flow graph connection due to
|
||
inconsistencies in the configuration file.
|
||
- Fix segmentation fault if the RINEX output was disabled.
|
||
- Added a feature that optionally enables the remote monitoring of GPS and
|
||
Galileo ephemeris using UDP and
|
||
[Protocol Buffers](https://developers.google.com/protocol-buffers).
|
||
- Now building the software passing the `-DENABLE_FPGA=ON` to CMake does not
|
||
make the receiver unusable when running on non-FPGA-enabled platforms. On
|
||
FPGA-enabled platforms, now it is possible to run non-FPGA-enabled
|
||
configurations.
|
||
- Fix bug that made the Monitor block to always set to 0 the
|
||
`carrier_phase_rads` parameter value.
|
||
- The `Labsat_Signal_Source` implementation of the `SignalSource` block now can
|
||
read files in the LabSat 3 Wideband format (`.LS3W`). When using this format,
|
||
this source block can provide multiple RF chain outputs.
|
||
- Replace `Receiver.sources_count` configuration parameter name by
|
||
`GNSS-SDR.num_sources`. The former parameter name is still read to ensure
|
||
backward compatibility with configuration files using that nomenclature.
|
||
- Fix bug in searching for gr-iio when CMake was re-run several times with
|
||
different settings for the `-DENABLE_FMCOMMS2` or `-DENABLE_PLUTOSDR` building
|
||
options.
|
||
- Fix building when using UHD >= v4.0.0.0.
|
||
- Fix building for `-DENABLE_FMCOMMS2=ON` and/or `-DENABLE_PLUTOSDR=ON` when the
|
||
built-in gr-iio module introduced in GNU Radio 3.10 is found. This in-tree GNU
|
||
Radio module takes precedence over the gr-iio package provided at
|
||
https://github.com/analogdevicesinc/gr-iio. If the GNU Radio module is found,
|
||
the other one is ignored.
|
||
- File `changelog.md` renamed to the more usual `CHANGELOG.md` uppercase name.
|
||
- New global configuration parameter `GNSS-SDR.observable_interval_ms`, set by
|
||
default to 20 [ms], allows to control the internal rate at which computed
|
||
observables sets are processed (50 observables sets per second by default).
|
||
- Fix bug in the `Monitor.decimation_factor` parameter, which was not working
|
||
properly for other values than 1.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.14](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.14) - 2021-01-08
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4428100.svg)](https://doi.org/10.5281/zenodo.4428100)
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Fixed bug in acquisition detection when the configuration parameter
|
||
`Acquisition_XX.threshold` was set but `Acquisition_XX.pfa` was not, causing
|
||
false locks.
|
||
- Fixed anti-jamming filters: `Pulse_Blanking_Filter`, `Notch_Filter`, and
|
||
`Notch_Filter_Lite`.
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- Faster `SignalConditioner` block when its implementation is set to
|
||
`Pass_Through`.
|
||
|
||
### Improvements in Interoperability:
|
||
|
||
- Added the Galileo E6 B/C signal structure based on E6-B/C Codes Technical
|
||
Note, Issue 1, January 2019, including Acquisition and Tracking blocks. The
|
||
Telemetry Decoder is still empty (only the CRC is checked, based on Galileo
|
||
High Accuracy Service E6-B Signal-In-Space Message Specification v1.2, April
|
||
2020).
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- Added a common shared pointer definition `gnss_shared_ptr`, which allows
|
||
handling the `boost::shared_ptr` to `std::shared_ptr` transition in GNU Radio
|
||
3.9 API more nicely.
|
||
- Support new FFT and firdes blocks' API in GNU Radio 3.9.
|
||
- Added detection of inconsistent function prototypes in `volk_gnsssdr` library
|
||
kernels at compile time.
|
||
- Fixed defects detected by clang-tidy check `bugprone-reserved-identifier`, and
|
||
added to the checks list. This check corresponds to CERT C Coding Standard
|
||
rule
|
||
[DCL37-C](https://wiki.sei.cmu.edu/confluence/display/c/DCL37-C.+Do+not+declare+or+define+a+reserved+identifier)
|
||
as well as its C++ counterpart,
|
||
[DCL51-CPP](https://wiki.sei.cmu.edu/confluence/display/cplusplus/DCL51-CPP.+Do+not+declare+or+define+a+reserved+identifier).
|
||
- Applied and added more clang-tidy checks related to readability:
|
||
`readability-make-member-function-const` and `readability-qualified-auto`.
|
||
|
||
### Improvements in Portability:
|
||
|
||
- Fixed `-DENABLE_OWN_GLOG=ON` building option when gflags is installed and it
|
||
is older than v2.1.2 (_e.g._, in CentOS 7).
|
||
- Improved handling of old gflags versions, minimum version set to 2.1.2.
|
||
Replaced `google::` by `gflags::` namespace when using functions of the gflags
|
||
library.
|
||
- Replaced `git://` by `https://` as the used protocol when downloading Gflags,
|
||
so it can work through firewalls requiring authentication.
|
||
- Fixed static linking of the matio library when downloaded and built by CMake.
|
||
- Improved CPU feature detection by switching to Google's
|
||
[cpu_features](https://github.com/google/cpu_features) library: The
|
||
`volk_gnsssdr` library had its own CPU feature detection methods, which were
|
||
not totally reliable and difficult to implement across compilers and OSes.
|
||
This is now handled by the `cpu_features` library, thus building upon that
|
||
expertise. Since that library has higher dependency version requirements than
|
||
GNSS-SDR, the old method is still used in old development environments. No
|
||
extra dependency is needed. This change is transparent to the user, since
|
||
everything is managed by the CMake scripts.
|
||
- The `volk_gnsssdr` library can be built on Microsoft Windows and can execute
|
||
SIMD instructions on that OS.
|
||
- Removed all instances of `_mm256_zeroupper()` in the `volk_gnsssdr` library,
|
||
since they are not required and lead to miscompilation with GCC 10.2 and
|
||
optimization level `-O3`.
|
||
- Fixed building with `-DENABLE_CUDA=ON` for blocks implemented with CUDA.
|
||
- Fixed linking against the ORC library if it is present in the system.
|
||
- Fixed a bug introduced in v0.0.13 that prevented getting Galileo-only PVT
|
||
fixes in some environments.
|
||
- Fixed duplication of protobuf build tree if it was locally built and then
|
||
installed with `DESTDIR` variable set.
|
||
|
||
### Improvements in Usability:
|
||
|
||
- Fixed a bug when enabling pseudorange carrier smoothing in other bands than
|
||
L1.
|
||
- If `SignalConditioner.implementation=Pass_Through`, then all the configuration
|
||
parameters for the `DataTypeAdapter`, `InputFilter` and `Resampler` blocks are
|
||
ignored. This was the default behavior in GNSS-SDR v0.0.12, but it changed in
|
||
v0.0.13. This change recovers the old behavior.
|
||
- Fixed occasional segmentation fault when exiting with `q` + `[Enter]` keys if
|
||
`Acquisition_XX.blocking=false`.
|
||
- Fixed the termination of the receiver with `q` + `[Enter]` keys when using the
|
||
`Osmosdr_Signal_Source` implementation of the `SignalSource` block.
|
||
- The `Labsat_Signal_Source` implementation of the `SignalSource` block now can
|
||
be throttled with the new parameters `SignalSource.enable_throttle_control`
|
||
and `SignalSource.throttle_frequency_sps`, thus allowing the emulation of
|
||
real-time operation.
|
||
- Improved General Block diagram, both in content and in image resolution.
|
||
- The `Custom_UDP_Signal_Source` implementation now accepts
|
||
`SignalSource.sample_type=cfloat`, in addition to the existing 4 and 8-bit
|
||
length sample types.
|
||
- Fixed the `obsdiff` and `rinex2assist` utilities when installed if they were
|
||
built with a locally downloaded version of GPSTk.
|
||
- The generated HTML documentation now makes use of the Doxygen grouping
|
||
feature.
|
||
- Improved rendering of equations in HTML documentation generated by Doxygen.
|
||
Make use of MathJax for equation rendering. Added new building option
|
||
`ENABLE_EXTERNAL_MATHJAX`, set to `ON` by default. If set to `OFF`, it allows
|
||
using a local installation of MathJax 2.
|
||
- Improved dumps in Telemetry Decoding blocks. Now they include the raw
|
||
navigation message bits. If `TelemetryDecoder_XX.dump=true`, the resulting
|
||
`.dat` binary file is also delivered in `.mat` format, which is readable from
|
||
Matlab and Python.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.13](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.13) - 2020-07-29
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3965566.svg)](https://doi.org/10.5281/zenodo.3965566)
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- Faster internal handling of `Gnss_Synchro` objects by reducing the amount of
|
||
copying via adding `noexcept` move constructor and move assignment operators,
|
||
so the move semantics are also used in STL containers.
|
||
- All `std::endl` have been replaced by the `'\n'` character, since there is no
|
||
need to always flush the stream.
|
||
- Performed a stack reordering of class members that seems to offer
|
||
statistically better performance in some processor architectures and/or
|
||
compilers.
|
||
- Add building option `ENABLE_STRIP` to generate stripped binaries (that is,
|
||
without debugging symbols), smaller in size and potentially providing better
|
||
performance than non-stripped counterparts. Only for GCC in Release build
|
||
mode. Set to `OFF` by default.
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- Improved usage of smart pointers to better express ownership of resources.
|
||
- Add definition of `std::make_unique` for buildings with C++11, and make use of
|
||
it through the source code.
|
||
- Private members in headers have been sorted by type and size, minimizing
|
||
padding space in the stack and making the files more readable for humans.
|
||
- Simpler, less error-prone design of the `GNSSBlockFactory` class public API
|
||
and internal implementation.
|
||
- Simpler API for the `Pvt_Solution` class.
|
||
- Improved system constant definition headers, numerical values are only written
|
||
once.
|
||
- Improved `const` correctness.
|
||
- The software can now be built against the GNU Radio 3.9 API that uses standard
|
||
library's smart pointers instead of Boost's. Minimum GNU Radio required
|
||
version still remains at 3.7.3.
|
||
- The software can now be built against Boost <= 1.73 (minimum version: 1.53).
|
||
- Fixed building with GCC 10 (gcc-10 and above flipped a default from `-fcommon`
|
||
to `-fno-common`, causing an error due to multiple defined lambda functions).
|
||
- Fixed warnings raised by GCC 10 and Clang 10.
|
||
- Various improvements in the CMake scripts: better decision on the C++ standard
|
||
to use; simplifications for various API dependency and environment versions
|
||
requirements, with more intuitive naming for variables; fixed the
|
||
`ENABLE_CLANG_TIDY` option; better GFORTRAN module; and broader adoption of
|
||
the modern per-target approach.
|
||
|
||
### Improvements in Portability:
|
||
|
||
- The software can now be cross-compiled on Petalinux environments.
|
||
- Removed python six module as a dependency if using Python 3.x.
|
||
- Make use of `std::span` if the compiler supports it, and use `gsl-lite` as a
|
||
fallback. The latter has been updated to version
|
||
[0.37.0](https://github.com/gsl-lite/gsl-lite/releases/tag/0.37.0).
|
||
- Improved finding of `libgfortran` in openSUSE and Fedora distributions.
|
||
- Improved interface for FPGA off-loading.
|
||
- Allow a random name for the build type. If not recognized, it is set to
|
||
`None`. This allows packaging in some distributions that pass an arbitrary
|
||
name as the build type (e.g., Gentoo) to avoid unexpected compiler flags. The
|
||
building option `ENABLE_PACKAGING` must be set to `ON` when packaging.
|
||
- Do not stop the receiver if SysV message queues cannot be created.
|
||
|
||
### Improvements in Reliability:
|
||
|
||
- Fixed a bug in GLONASS GNAV CRC computation.
|
||
- Fixed a bug in GLONASS time year.
|
||
- Fixed a possible buffer overflow in the generation of RTCM messages.
|
||
- Fixed bugs which could cause a random crash on receiver stopping.
|
||
|
||
### Improvements in Reproducibility:
|
||
|
||
- Improved reproducibility of the `volk_gnsssdr` library: Drop compile-time CPU
|
||
detection.
|
||
|
||
### Improvements in Testability:
|
||
|
||
- Add building option `ENABLE_BENCHMARKS`, which activates the building of
|
||
benchmarks for some code snippets, making it easier to developers to benchmark
|
||
different implementations for the same purpose. Set to `OFF` by default.
|
||
|
||
### Improvements in Usability:
|
||
|
||
- Do not pollute the source directory if the software is built from an
|
||
out-of-source-tree directory. Downloaded external sources and test raw files
|
||
are now stored in a `./thirdparty` folder under the building directory. In the
|
||
case of an out-of-source-tree build, the generated binaries are stored in an
|
||
`./install` folder, also under the building directory. The old behavior for
|
||
generated binaries is maintained if the building is done from any source tree
|
||
subfolder (for instance, `gnss-sdr/build`): in that case, binaries are stored
|
||
in the source tree (under `gnss-sdr/install`).
|
||
- Defined new `GNSS-SDR.GPS_banned_prns`, `GNSS-SDR.Galileo_banned_prns`,
|
||
`GNSS-SDR.Glonass_banned_prns` and `GNSS-SDR.Beidou_banned_prns` configuration
|
||
parameters. The user can specify lists of satellites that will not be
|
||
processed (e.g., `GNSS-SDR.Galileo_banned_prns=14,18` since Galileo E14 and
|
||
E18 satellites are not usable for PVT). Satellites on those lists will never
|
||
be assigned to a processing channel.
|
||
- Added acquisition and tracking monitors, with configuration examples.
|
||
- Added a Matlab script to quantize the input signal with a given number of bits
|
||
per sample.
|
||
- Fixed the building option `-DENABLE_LOG=OFF`, which strips internal logging
|
||
from the binary and can help to reduce its size and ultimately to speed up the
|
||
receiver. In binaries with enabled logging, it still can be disabled by
|
||
passing the command line flag `--minloglevel=3` to `gnss-sdr`. This can be
|
||
relevant in embedded devices with scarce storage capabilities.
|
||
- Fixed a bug in the Signal Sources configuration that made the number of
|
||
samples parameter ignored when too large (that is, when set larger than
|
||
2^31-1). Now the `samples` parameter accepts values up to 2^64-1, that is,
|
||
18,446,744,073,709,551,615 samples.
|
||
- Fixed a bug in the forwarding of NMEA messages to a serial port (configuration
|
||
of the `PVT.nmea_dump_devname` parameter was ignored).
|
||
- Updated version of the Contributor Covenant to version 2.0. Added badge in the
|
||
README.md file.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.12](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.12) - 2020-03-13
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3709089.svg)](https://doi.org/10.5281/zenodo.3709089)
|
||
|
||
### Improvements in Accuracy:
|
||
|
||
- Improved accuracy of the C/N0 estimator.
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Fixed computation of acquisition threshold when using the `Acquisition_XX.pfa`
|
||
configuration parameter, including non-coherent accumulation
|
||
(`Acquisition_XX.max_dwells` > 1).
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- Faster implementation of the Viterbi decoder for Galileo navigation messages.
|
||
- The `-O3` flag is now passed to GCC in `Release` and `RelWithDebInfo` build
|
||
types (instead of `-O2`), thus enabling tree vectorization. Disabled if
|
||
building for Fedora or Gentoo.
|
||
|
||
### Improvements in Flexibility:
|
||
|
||
- New Tracking parameters allow the configuration of the C/N0 and lock detector
|
||
smoothers, as well as the activation of the FLL in pull-in and steady-state
|
||
stages.
|
||
- Added new Tracking parameter `Tracking_XX.carrier_aiding`, allowing
|
||
enabling/disabling of carrier aiding to the code tracking loop.
|
||
- New PVT parameter `PVT.enable_rx_clock_correction` allows to enable or disable
|
||
the continuous application of the Time solution correction (clock steering) to
|
||
the computation of Observables. By default is set to `false` (that is,
|
||
disabled).
|
||
- New PVT parameter `PVT.max_clock_offset_ms`: if
|
||
`PVT.enable_rx_clock_correction` is set to `false`, this parameter sets the
|
||
maximum allowed local clock offset with respect to the Time solution. If the
|
||
estimated offset exceeds this parameter, a clock correction is applied to the
|
||
computation of Observables.
|
||
- Fixed L5 and E5a receiver chains when tracking the data component.
|
||
- Added new PVT configuration parameter `PVT.rinex_name` to specify a custom
|
||
name of the generated RINEX files. A commandline flag `--RINEX_name` is also
|
||
available, and overrides the configuration.
|
||
|
||
### Improvements in Interoperability:
|
||
|
||
- Fixed PVT solution in receivers processing L1 plus L2C and/or L5 signals.
|
||
- Fixed the initialization of the carrier phase accumulator. Carrier phase
|
||
measurements are now usable to compute integer ambiguity resolution.
|
||
- Added carrier phase observable initialization to match the pseudorange length.
|
||
- Added RINEX files generation for triple-band configurations (L1 + L2C + L5 and
|
||
L1 + E1 + L2C + L5 + E5a).
|
||
- Fixed bugs in the decoding of BeiDou navigation messages.
|
||
- Fixed bugs in the generation of RTCM messages.
|
||
- Fixed a bug in feeding Galileo channels' observations to RTKLIB, which was
|
||
causing wrong date of PVT fixes in Galileo-only receivers and not considering
|
||
Galileo observations in multi-constellation receivers when using signals after
|
||
the GPS rollover on April 6, 2019.
|
||
- Improved management of devices with the AD9361 RF transceiver.
|
||
- Fixed bugs in FPGA off-loading.
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- Rewriting of acquisition and tracking adapters, thus avoiding a lot of code
|
||
duplication.
|
||
- New CMake option `-DENABLE_ARMA_NO_DEBUG` defines the macro `ARMA_NO_DEBUG`,
|
||
which disables all run-time checks, such as bounds checking, in the Armadillo
|
||
library. This will result in faster code. This option is disabled by default
|
||
during development, but automatically set to `ON` if the option
|
||
`ENABLE_PACKAGING` is set to `ON`.
|
||
- All shadowed variables detected by passing `-Wshadow` to the compiler have
|
||
been fixed (see https://rules.sonarsource.com/cpp/RSPEC-1117?search=shadow and
|
||
MISRA C++:2008, 2-10-2 - Identifiers declared in an inner scope shall not hide
|
||
an identifier declared in an outer scope).
|
||
- Apply more clang-tidy checks related to readability:
|
||
`readability-avoid-const-params-in-decls`,
|
||
`readability-braces-around-statements`, `readability-isolate-declaration`,
|
||
`readability-redundant-control-flow`, and
|
||
`readability-uppercase-literal-suffix`. Fixed raised warnings.
|
||
- Fixed a number of defects detected by `cpplint.py`. Filters applied:
|
||
`+build/class`, `+build/c++14`, `+build/deprecated`,
|
||
`+build/explicit_make_pair`, `+build/include_what_you_use`,
|
||
`+build/printf_format`, `+build/storage_class`, `+readability/constructors`,
|
||
`+readability/namespace`, `+readability/newline`, `+readability/utf8`,
|
||
`+runtime/casting`, `+runtime/explicit`, `+runtime/indentation_namespace`,
|
||
`+runtime/init`, `+runtime/invalid_increment`,
|
||
`+runtime/member_string_references`, `+runtime/memset`, `+runtime/operator`,
|
||
`+runtime/printf`, `+runtime/printf_format`, and `+whitespace/blank_line`.
|
||
- `clang-format` can now be applied to the whole code tree without breaking
|
||
compilation.
|
||
- Added more check options to `.clang-tidy` file.
|
||
- Default Python version is now >= 3.4. Python 2.7 still can be used in systems
|
||
where Python 3 is not available (e.g., CentOS 7, Debian 8, Ubuntu 10.04).
|
||
- CMake now passes the `-DCMAKE_BUILD_TYPE` (or configuration in
|
||
multi-configuration generators like Xcode) to modules built along with
|
||
`gnss-sdr` (e.g, the `volk_gnsssdr` library and googletest). Build types
|
||
available: `None`, `Release` (by default), `Debug`, `RelWithDebInfo`,
|
||
`MinSizeRel`, `Coverage`, `NoOptWithASM`, `O2WithASM`, `O3WithASM`, `ASAN`.
|
||
- Fix runtime errors when compiling in `Debug` mode on macOS.
|
||
- Updated links in comments through the source code and in CMake scripts.
|
||
- Update GSL implementation to 0.36.0. See
|
||
https://github.com/gsl-lite/gsl-lite/releases/tag/v0.36.0
|
||
- Create a CI job on GitHub to ensure that `clang-tidy` has been applied in most
|
||
of the source code (some optional blocks and tests are left apart).
|
||
- Create a CI job on GitHub to ensure that `clang-format` has been applied.
|
||
- Create a CI job on GitHub to ensure that `cpplint` filters have been applied.
|
||
- Create a CI job on GitHub to ensure compliance with REUSE Specification (see
|
||
https://reuse.software)
|
||
- Create a CI job on GitHub using `prettier` (https://prettier.io/) to check
|
||
markdown files formatting.
|
||
- Create a CI job on GitHub to check the formatting of CMake scripts using
|
||
`cmakelint` (see https://github.com/richq/cmake-lint).
|
||
|
||
### Improvements in Openness:
|
||
|
||
- Make software compliant with REUSE Specification – Version 3.0 (see
|
||
https://reuse.software/spec/).
|
||
|
||
### Improvements in Portability:
|
||
|
||
- The CMake scripts now find dependencies in Debian's riscv64 architecture.
|
||
- Enable AVX2 kernels of the `volk_gnsssdr` library when using the Clang
|
||
compiler.
|
||
- Fixed building in some ARM-based devices. Now Clang and ARMClang can be used
|
||
for native building.
|
||
- Added toolchain files for building gnss-sdr and the `volk_gnsssdr` library in
|
||
several ARM processor architectures, including those in Raspberry Pi 3 and 4.
|
||
- The software can now be built using Xcode (passing `-GXcode` to CMake) without
|
||
previous manual installation of `volk_gnsssdr`.
|
||
- The software can now be built using Xcode (passing `-GXcode` to CMake) without
|
||
gflags, glog, matio, PugiXML, Protocol Buffers or googletest previously
|
||
installed.
|
||
- Now the `volk_gnsssdr` library can be built on Microsoft Windows.
|
||
- Now the `volk_gnsssdr` library makes use of C11 `aligned_alloc` where
|
||
available.
|
||
- Improved CMake script for cross-compilation and for the detection of AVX, AVX2
|
||
and NEON (v7 and v8) instructions.
|
||
- Fixed warnings raised by CMake 3.17.
|
||
- Fixed warnings raised by `cmake --warn-uninitialized ..`
|
||
- Fixed the receiver's availability in systems in which the Sys V message queue
|
||
mechanism is not available.
|
||
|
||
### Improvements in Reliability:
|
||
|
||
- Decoding of navigation messages no longer rely on implementation defined
|
||
behavior for shifting left a signed integer.
|
||
- Removed usage of functions with insecure API (e.g., `strcpy`, `sprintf`).
|
||
- New type alias `volk_gnsssdr::vector` allows both aligned memory allocation
|
||
and automatic deallocation.
|
||
- Fixed a memory leak in the generation of Galileo PRN codes.
|
||
- Added clang-tidy checks `clang-analyzer-security.*`,
|
||
`clang-analyzer-optin.portability.UnixAPI` clang-tidy checks. Fixed raised
|
||
warnings.
|
||
- Fixed `cpplint.py` `runtime/printf` and `runtime/explicit` errors.
|
||
- All constructors callable with one argument are marked with the keyword
|
||
explicit. See MISRA C++:2008, 12-1-3 - All constructors that are callable with
|
||
a single argument of fundamental type shall be declared explicit.
|
||
|
||
### Improvements in Repeatability:
|
||
|
||
- Added the option to apply carrier smoothing of code pseudoranges with new
|
||
Observables parameter `Observables.enable_carrier_smoothing`.
|
||
- Fixed normalization of DLL discriminator in BPSK modulations when the spacing
|
||
between correlators was not 0.5.
|
||
|
||
### Improvements in Testability:
|
||
|
||
- Add receiver runtime to `position_test` report.
|
||
- Improvements in FPGA unit tests.
|
||
- Add new utility tool `obsdiff` to perform single and double differences
|
||
computations from observation RINEX files. Requires GPSTk and Armadillo >=
|
||
9.800.
|
||
|
||
### Improvements in Usability:
|
||
|
||
- A new global parameter `GNSS-SDR.pre_2009_file` allows to process raw sample
|
||
files containing GPS L1 C/A signals dated before July 14, 2009.
|
||
- Improved DLL-PLL binary dump MATLAB/Octave plot script. Old versions removed.
|
||
- Simplified RTKLIB error log.
|
||
- Added a Python 3 plotting script to show relative performance of generic
|
||
`volk_gnsssdr` kernels wrt. SIMD fastest versions.
|
||
- Added reporting of velocity in the terminal.
|
||
- Added reporting of user clock drift estimation, in ppm, in the `Pvt_Monitor`
|
||
and in internal logging (`Debug` mode).
|
||
- Updated documentation generated by Doxygen, now the `pdfmanual` target works
|
||
when using ninja.
|
||
- CMake now generates an improved summary of required/optional dependency
|
||
packages found and enabled/disabled features, including the building system
|
||
and GNSS-SDR, CMake and compiler versions. This info is also stored in a file
|
||
called `features.log` in the building directory.
|
||
- Markdown files have been wrapped to 80 characters line length to make it
|
||
easier to read them from the terminal.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.11](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.11) - 2019-08-04
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3359989.svg)](https://doi.org/10.5281/zenodo.3359989)
|
||
|
||
This release has several improvements in different dimensions, addition of new
|
||
features and bug fixes:
|
||
|
||
### Improvements in Accuracy:
|
||
|
||
- Local clock correction based on PVT solution, allowing the delivery of
|
||
continuous observables.
|
||
- Fix a bug in broadcast ionospheric parameters usage.
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Improved mechanism for false lock detection in the Tracking loops.
|
||
- Fixed bug in Galileo INAV/FNAV message decoding when PLL is locked at 180
|
||
degrees, which prevented from correct navigation message decoding in some
|
||
situations.
|
||
- Fixed bug that caused a random deadlock in the Observables block, preventing
|
||
the computation of PVT fixes.
|
||
- Fixed PVT computation continuity through the TOW rollover.
|
||
- Improved signal acquisition and tracking mechanisms in high dynamic scenarios.
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- Added mechanism for assisted acquisition of signals on a secondary band when
|
||
the primary has already been acquired. This allows a great reduction of the
|
||
computational load in multi-frequency configurations.
|
||
- Tracking loops now perform bit synchronization, simplifying the decoding
|
||
process in Telemetry blocks and FPGA-offloading.
|
||
- Improved preamble detection implementation in the decoding of navigation
|
||
messages (acceleration by x1.6 on average per channel).
|
||
- Shortened Acquisition to Tracking transition time.
|
||
- Applied clang-tidy checks and fixes related to performance:
|
||
`performance-faster-string-find`, `performance-for-range-copy`,
|
||
`performance-implicit-conversion-in-loop`,
|
||
`performance-inefficient-algorithm`,
|
||
`performance-inefficient-string-concatenation`,
|
||
`performance-inefficient-vector-operation`, `performance-move-const-arg`,
|
||
`performance-move-constructor-init`, `performance-noexcept-move-constructor`,
|
||
`performance-type-promotion-in-math-fn`,
|
||
`performance-unnecessary-copy-initialization`,
|
||
`performance-unnecessary-value-param`, `readability-string-compare`.
|
||
|
||
### Improvements in Flexibility:
|
||
|
||
- Rewritten Control Thread and GNSS flow graph for increased control of
|
||
channels' status and smarter assignation of satellites in multi-band
|
||
configurations.
|
||
- New Tracking parameters allow the configuration of PLL and DLL filters order.
|
||
- Added parameter to enable FLL during pull-in time.
|
||
- Configurable pull-in time in the Tracking loops.
|
||
|
||
### Improvements in Interoperability:
|
||
|
||
- Added the BeiDou B1I and B3I receiver chains.
|
||
- Fix bug in GLONASS dual frequency receiver.
|
||
- Added a custom UDP/IP output for PVT data streaming.
|
||
- Improved Monitor block with UDP/IP output for internal receiver's data
|
||
streaming.
|
||
- Custom output formats described with `.proto` files, making easier to other
|
||
applications reading them in a forward and backward-compatible fashion upon
|
||
future format changes. New dependency: Protocol Buffers >= 3.0.0
|
||
- Fixes in RINEX generation: week rollover, annotations are not repeated anymore
|
||
in navigation files. Parameter `PVT.rinexnav_rate_ms` has been removed,
|
||
annotations are made as new ephemeris arrive.
|
||
- Fixes in RTCM messages generation: week rollover.
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- The internal communication mechanism based on `gr::msg_queue` has been
|
||
replaced by a thread-safe, built-in asynchronous message passing system based
|
||
on GNU Radio's Polymorphic Types. This change is backwards-compatible and
|
||
prevents from a failure in case of a possible future deprecation or removal of
|
||
the `gr::msg_queue` API.
|
||
- Deprecated `boost::asio::io_service` replaced by `boost::asio::io_context` if
|
||
Boost > 1.65
|
||
- CMake turns all policies to ON according to the running version up to version
|
||
3.15.
|
||
- Usage of clang-tidy integrated into CMake scripts. New option
|
||
`-DENABLE_CLANG_TIDY=ON` executes clang-tidy along with compilation. Requires
|
||
clang compiler.
|
||
- Applied clang-tidy checks and fixes related to readability:
|
||
`readability-container-size-empty`, `readability-identifier-naming`,
|
||
`readability-inconsistent-declaration-parameter-name`,
|
||
`readability-named-parameter`, `readability-non-const-parameter`,
|
||
`readability-string-compare`.
|
||
- Improved includes selection following suggestions by `include-what-you-use`
|
||
(see https://include-what-you-use.org/), allowing faster compiles, fewer
|
||
recompiles and making refactoring easier.
|
||
- Massive reduction of warnings triggered by clang-tidy checks.
|
||
- Throughout code cleaning and formatting performed with automated tools in
|
||
order to reduce future commit noise.
|
||
|
||
### Improvements in Portability:
|
||
|
||
- Added interfaces for FPGA off-loading in GPS L1 C/A, Galileo E1b/c, GPS L2C,
|
||
GPS L5 and Galileo E5a receiver chains.
|
||
- CMake scripts now follow a modern approach (targets and properties) but still
|
||
work with 2.8.12.
|
||
- Improvements for macOS users using Homebrew.
|
||
- The software builds against GNU Radio >= 3.7.3, including 3.8.0. Automatically
|
||
detected, no user intervention is required.
|
||
- The `volk_gnsssdr` library can now be built without requiring Boost if the
|
||
compiler supports C++17 or higher.
|
||
- The Boost Filesystem library is not anymore a required dependency in cases
|
||
where it can be replaced by `std::filesystem`. Automatically detected, no user
|
||
intervention is required.
|
||
- CMake scripts automatically select among C++11, C++14, C++17, or C++20
|
||
standards, the most recent as possible, depending on compiler and dependencies
|
||
versions.
|
||
- Drawback in portability: Protocol Buffers >= 3.0.0 is a new required
|
||
dependency.
|
||
|
||
### Improvements in Reliability:
|
||
|
||
- Included the Guidelines Support Library. General improvement of memory
|
||
management, replacement of raw pointers by containers or smart pointers.
|
||
- Applied clang-tidy checks and fixes related to High Integrity C++:
|
||
`performance-move-const-arg`, `modernize-use-auto`,
|
||
`modernize-use-equals-default`, `modernize-use-equals-delete`,
|
||
`modernize-use-noexcept`, `modernize-use-nullptr`, `cert-dcl21-cpp`,
|
||
`misc-new-delete-overloads`, `cert-dcl58-cpp`, `cert-err52-cpp`,
|
||
`cert-err60-cpp`, `hicpp-exception-baseclass`, `hicpp-explicit-conversions`.
|
||
- Fixed a number of defects detected by Coverity Scan (version June 2019).
|
||
|
||
### Improvements in Usability:
|
||
|
||
- The receiver now admits FPGA off-loading, allowing for real time operation in
|
||
embedded systems at high sampling rates and high number of signals and
|
||
channels per signal in multiple bands.
|
||
- Fixed program termination (avoiding hangs and segfaults in some
|
||
platforms/configurations).
|
||
- The `Labsat_Signal_Source` now terminates the receiver's execution when the
|
||
end of file(s) is reached. It now accepts LabSat 2 filenames and series of
|
||
LabSat 3 files.
|
||
- Added configuration parameters to set the annotation rate in KML, GPX, GeoJSON
|
||
and NMEA outputs, set by default to 1 s.
|
||
- New parameter `PVT.show_local_time_zone` displays time in the local time zone.
|
||
Subject to the proper system configuration of the machine running the software
|
||
receiver. This feature is not available in old compilers.
|
||
- CMake now generates a summary of required/optional dependency packages found
|
||
and enabled/disabled features. This info is also stored in a file called
|
||
features.log in the building directory.
|
||
- Improved information provided to the user in case of building configuration
|
||
and runtime failures.
|
||
- Remove abandoned building option `-DENABLE_GN3S` and `Gn3s_Signal_Source`
|
||
implementation.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.10](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.10) - 2018-12-14
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.2279988.svg)](https://doi.org/10.5281/zenodo.2279988)
|
||
|
||
This release has several improvements in different dimensions, addition of new
|
||
features and bug fixes:
|
||
|
||
### Improvements in Accuracy:
|
||
|
||
- Part of the RTKLIB core library has been integrated into GNSS-SDR. There is
|
||
now a single PVT block implementation which makes use of RTKLIB to deliver PVT
|
||
solutions, including Single and PPP navigation modes.
|
||
- Fixed CN0 estimation for other correlation times than 1 ms.
|
||
- Improved computation of tracking parameters and GNSS observables.
|
||
- Other minor bug fixes.
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Internal Finite State Machines rewritten for improved continuity in delivering
|
||
position fixes. This fixes a bug that was stalling the receiver after about
|
||
six hours of continuous operation.
|
||
- Redesign of the time counter for enhanced continuity.
|
||
- Improved flow graph in multi-system configurations: the receiver does not get
|
||
stalled anymore if no signal is found from the first system.
|
||
- Improved acquisition and tracking sensitivity.
|
||
- Added mechanisms for Assisted GNSS, thus shortening the Time-To-First-Fix.
|
||
Provision of data via XML files or via SUPL v1.0. Documented at
|
||
https://gnss-sdr.org/docs/sp-blocks/global-parameters/
|
||
- Other minor bug fixes.
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- Added the possibility of non-blocking acquisition, which works well when using
|
||
real-time data from an RF front-end.
|
||
- Improved flow graph in multi-band configurations: satellites acquired in one
|
||
band are immediately searched in others.
|
||
- Complex local codes have been replaced by real codes, alleviating the
|
||
computational burden.
|
||
- New `volk_gnsssdr` kernels: `volk_gnsssdr_16i_xn_resampler_16i_xn.h`,
|
||
`volk_gnsssdr_16ic_16i_rotator_dot_prod_16ic_xn.h`,
|
||
`volk_gnsssdr_32f_xn_resampler_32f_xn.h`, and
|
||
`volk_gnsssdr_32fc_32f_rotator_dot_prod_32fc_xn.h`.
|
||
- Some AVX2 implementations added to the `volk_gnsssdr` library.
|
||
- Improvement in C++ usage: Use of const container calls when result is
|
||
immediately converted to a const iterator. Using these members removes an
|
||
implicit conversion from iterator to const_iterator.
|
||
- Output printers can be shut down, with some savings in memory and storage
|
||
requirements.
|
||
- A number of code optimizations here and there.
|
||
|
||
### Improvements in Flexibility:
|
||
|
||
- A number of new parameters have been exposed to the configuration system.
|
||
- Possibility to choose Pilot or Data component for tracking of GPS L5 and
|
||
Galileo E5a signals.
|
||
- Enabled extended coherent integration times for signal tracking.
|
||
- Configurable coherent and/or non-coherent signal acquisition.
|
||
- Some configuration parameters can now be overridden by commandline flags for
|
||
easier use in scripts.
|
||
|
||
### Improvements in Interoperability:
|
||
|
||
- Added the GPS L5 receiver chain.
|
||
- Added the GLONASS L1 SP receiver chain.
|
||
- Added the GLONASS L2 SP receiver chain.
|
||
- Improvements in the Galileo E5a and GPS L2C receiver chains.
|
||
- Updated list of available GNSS satellites.
|
||
- Added five more signal sources: `Fmcomms2_Signal_Source` (requires gr-iio),
|
||
`Plutosdr_Signal Source` (requires gr-iio), `Spir_GSS6450_File_Signal_Source`,
|
||
`Labsat_Signal_Source` and `Custom_UDP_Signal_Source` (requires libpcap).
|
||
Documented in https://gnss-sdr.org/docs/sp-blocks/signal-source/
|
||
- Improved support for BladeRF, HackRF and RTL-SDR front-ends.
|
||
- Added tools for the interaction with front-ends based on the AD9361 chipset.
|
||
- Intermediate results are now saved in MAT-file format (`.mat`), readable from
|
||
Matlab/Octave and from Python via h5py.
|
||
- Added the GPX output format.
|
||
- Improvements in the generation of KML files.
|
||
- Improvements in the NMEA output. The receiver can produce GPGGA, GPRMC, GPGSA,
|
||
GPGSV, GAGSA and GAGSV sentences.
|
||
- Improvements in the RTCM server stability.
|
||
- Improvements in the correctness of generated RINEX files.
|
||
- The receiver can read and make use of Galileo almanac XML files published by
|
||
the European GNSS Service Centre at https://www.gsc-europa.eu/product-almanacs
|
||
- Own-defined XML schemas for navigation data published at
|
||
https://github.com/gnss-sdr/gnss-sdr/tree/next/docs/xml-schemas
|
||
- Added program `rinex2assist` to convert RINEX navigation files into XML files
|
||
usable for Assisted GNSS. Only available building from source. See
|
||
https://github.com/gnss-sdr/gnss-sdr/tree/next/src/utils/rinex2assist
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- Setup of a Continuous Integration system that checks building and runs QA code
|
||
in a wide range of GNU/Linux distributions (Arch Linux, CentOS, Debian,
|
||
Fedora, OpenSUSE, Ubuntu) and releases. See
|
||
https://gitlab.com/gnss-sdr/gnss-sdr
|
||
- Creation of multi-system processing blocks, drastically reducing code
|
||
duplication and maintainability time.
|
||
- Automated code formatting with clang-format. This tool is widely available and
|
||
easy to integrate into many code editors, and it also can be used from the
|
||
command line. It cuts time spent on adhering to the project's code formatting
|
||
style.
|
||
- Improvement in C++ usage: C-style casts have been replaced by C++ casts.
|
||
C-style casts are difficult to search for. C++ casts provide compile time
|
||
checking ability and express programmers' intent better, so they are safer and
|
||
clearer.
|
||
- Improvement in C++ usage: The override special identifier is now used when
|
||
overriding a virtual function. This helps the compiler to check for type
|
||
changes in the base class, making the detection of errors easier.
|
||
- Improvement in C++ usage: A number of unused includes have been removed. Order
|
||
of includes set to: local (in-source) headers, then library headers, then
|
||
system headers. This helps to detect missing includes.
|
||
- Improvement in C++ usage: Enhanced const correctness. Misuses of those
|
||
variables are detected by the compiler.
|
||
- Improved code with clang-tidy and generation of a `compile_commands.json` file
|
||
containing the exact compiler calls for all translation units of the project
|
||
in machine-readable form if clang-tidy is detected.
|
||
- Applied some style rules to CMake scripts.
|
||
- Minimal versions of dependencies identified and detected.
|
||
|
||
### Improvements in Portability:
|
||
|
||
- Several CMake scripts improvements, more verbose outputs in case of errors.
|
||
Building configuration has been documented in
|
||
https://gnss-sdr.org/docs/tutorials/configuration-options-building-time/
|
||
- Improved SDK for cross-compilation in embedded devices. Documented in
|
||
https://gnss-sdr.org/docs/tutorials/cross-compiling/
|
||
- Improved control over minimum required versions for core dependencies.
|
||
- The software builds with C++11, C++14 and C++17 standards.
|
||
- The software can now be built using GCC >= 4.7.2 or LLVM/Clang >= 3.4.0
|
||
compilers on GNU/Linux, and with Clang/AppleClang on macOS.
|
||
- The Ninja build system can be used in replacement of make.
|
||
- The `volk_gnsssdr` library can be built using Python 2.7+ or Python 3.6+.
|
||
- The `volk_gnsssdr` library is now ready for AArch64 NEON instructions.
|
||
- Improved detection of required and optional dependencies in many GNU/Linux
|
||
distributions and processor architectures.
|
||
- Improvement in C++ usage: The `<ctime>` library has been replaced by the more
|
||
modern and portable `<chrono>` (except for the interaction with RTKLIB).
|
||
- Improvement in C++ usage: The `<stdio.h>` library has been replaced by the
|
||
more modern and portable `<fstream>` for file handling.
|
||
- Improvement in C++ usage: C++ libraries preferred over C libraries (e.g.,
|
||
`<cctype>` instead of `<ctype.h>`, `<cmath>` instead of `<math.h>`).
|
||
- Fix compatibility with Boost 1.67 (closes Debian bug #911882
|
||
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911882)
|
||
- Fixes required by Debian packaging.
|
||
- Fixes required by Macports packaging.
|
||
- A downside in portability: BLAS and LAPACK libraries are now required even in
|
||
ARM devices.
|
||
- A downside in portability: the matio library >= 1.5.3 is a new required
|
||
dependency. If not found, it is downloaded and built automatically at building
|
||
time, but this requires libtool, automake and hdf5 already installed in the
|
||
system.
|
||
- A downside in portability: the PugiXML library is a new required dependency.
|
||
If not found, it is downloaded and built automatically at building time.
|
||
|
||
### Improvements in Reliability:
|
||
|
||
- Introduced 3 new Input Filter implementations for pulsed and narrowband
|
||
interference mitigation: `Pulse_Blanking_Filter`, `Notch_Filter` and
|
||
`Notch_Filter_Lite`. Documented in
|
||
https://gnss-sdr.org/docs/sp-blocks/input-filter/
|
||
- Improved flow graph stability.
|
||
- Introduction of high-integrity C++ practices into the source code and included
|
||
in the coding style guide. See https://gnss-sdr.org/coding-style/
|
||
- Fixed a number of defects detected by Coverity Scan.
|
||
- Improvement of QA code and addition of a number of new tests. Documented at
|
||
https://gnss-sdr.org/docs/tutorials/testing-software-receiver-2/
|
||
- Improvement in C++ usage: `rand()` function replaced by `<random>` library.
|
||
- Improvement in C++ usage: `strlen` and `strncpy` have been replaced by safer
|
||
C++ counterparts.
|
||
- Improvement in C++ usage: Some destructors have been fixed, avoiding
|
||
segmentation faults when exiting the program.
|
||
- Website switched from http to https. Links in the source tree switched when
|
||
available.
|
||
|
||
### Improvements in Reproducibility:
|
||
|
||
- Setup of a Continuous Reproducibility system at GitLab for the automatic
|
||
reproduction of experiments. The concept was introduced in
|
||
https://ieeexplore.ieee.org/document/8331069/ Example added in the
|
||
`src/utils/reproducibility/ieee-access18/` folder.
|
||
- Fixes of Lintian warnings related to build reproducibility.
|
||
|
||
### Improvements in Scalability:
|
||
|
||
- Improvements in multi-system, multi-band receiver configurations. The receiver
|
||
now accepts any number of channels and systems in the three available bands.
|
||
- All possible combinations of signals and integration times are now accepted by
|
||
the Observables block.
|
||
|
||
### Improvements in Testability:
|
||
|
||
- Several Unit Tests added. Documentation of testing concepts and available
|
||
tests at https://gnss-sdr.org/docs/tutorials/testing-software-receiver/
|
||
- New extra unit test `AcquisitionPerformanceTest` checks the performance of
|
||
Acquisition blocks.
|
||
- New extra unit test `TrackingPullInTest` checks acquisition to tracking
|
||
transition.
|
||
- New extra unit test `HybridObservablesTest` checks the generation of
|
||
observables.
|
||
- Improved system testing: position_test accepts a wide list of parameters and
|
||
can be used with external files.
|
||
- Receiver channels can now be fixed to a given satellite.
|
||
- Testing integrated in a Continuous Reproducibility system (see above).
|
||
- Improved CTest support in `volk_gnsssdr`.
|
||
|
||
### Improvements in Usability:
|
||
|
||
- All Observables block implementations have been merged into a single
|
||
implementation for all kinds of GNSS signals, making it easier to configure.
|
||
- All PVT block implementations have been merged into a single implementation
|
||
for all kinds of GNSS signals, making it easier to configure.
|
||
- Misleading parameter name `GNSS-SDR.internal_fs_hz` has been replaced by
|
||
`GNSS-SDR.internal_fs_sps`. The old parameter name is still read. If found, a
|
||
warning is provided to the user. The old name will be removed in future
|
||
releases.
|
||
- Updated and improved online documentation of processing blocks at
|
||
https://gnss-sdr.org/docs/sp-blocks/
|
||
- Improved documentation of required dependency packages in several GNU/Linux
|
||
distributions.
|
||
- Dump and output files can now be stored anywhere.
|
||
- Parameter names with the same role have been harmonized within different block
|
||
implementations.
|
||
- Added a changelog, a code of conduct, a contributing guide and a pull-request
|
||
template in the source tree.
|
||
- Added colors to the commandline user interface.
|
||
- Updated manfiles.
|
||
- Updated examples of configuration files under the `conf/` folder.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.9](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.9) - 2017-02-13
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.291371.svg)](https://doi.org/10.5281/zenodo.291371)
|
||
|
||
This release has several improvements, addition of new features and bug fixes in
|
||
many dimensions:
|
||
|
||
### Improvements in Accuracy:
|
||
|
||
- Major rewriting in the generation of pseudoranges.
|
||
- Fixed bug in Galileo E5a/I codes.
|
||
- Fixed bug in Galileo E1 correlator spacing.
|
||
- Fixed bug that was causing errors in receivers above the troposphere.
|
||
- Fixed 16-bit complex resampler.
|
||
- Improved time tracking algorithm.
|
||
- Added Bancroft's algorithm implementation for PVT initialization.
|
||
|
||
### Improvements in Availability:
|
||
|
||
- Improved numerical stability of the PVT solution. The infamous bug that was
|
||
causing apparently random error peaks has finally been fixed.
|
||
|
||
### Improvements in Efficiency:
|
||
|
||
- VOLK_GNSSSDR: Added NEON,AVX and unaligned protokernels for
|
||
`volk_gnsssdr_32f_index_max_32` kernel.
|
||
- VOLK_GNSSSDR: Added `volk_gnsssdr-config-info` to the list of generated
|
||
executables.
|
||
|
||
### Improvements in Flexibility:
|
||
|
||
- Added maximum number of dwells in the Tong algorithm.
|
||
|
||
### Improvements in Interoperability:
|
||
|
||
- Added six new Galileo satellites: FM7, FM10, FM11, FM12, FM13, FM14.
|
||
- The Hybrid_Observables and Hybrid_PVT implementations can now handle more
|
||
types of GNSS signals.
|
||
- The RINEX printer can now print L2C and E5a observables and navigation files,
|
||
including multiband configurations.
|
||
- Added RTCM 3.2 output to more receiver configurations.
|
||
|
||
### Improvements in Maintainability:
|
||
|
||
- The VOLK_GNSSSDR library can now be built with Python 3. Switched dependencies
|
||
for VOLK_GNSSDR: from (old, python2.7-only) python-cheetah templates to
|
||
Python3 friendly python-mako and python-six. So, Python-cheetah dependency has
|
||
been dropped, and python-mako and python-six have been added.
|
||
- If suitable versions of gflags, glog, armadillo or googletest are not found in
|
||
the system, they will be downloaded and built at compile time (versions 2.2.0,
|
||
0.3.4, 7.600.2 and 1.8.0, respectively).
|
||
- Fixed more than 30 defects detected by Coverity Scan.
|
||
- Added CMake Python finder and module checker.
|
||
- Deleted files related to CPack.
|
||
- Fixes, updates and improvements in the documentation.
|
||
- Improvements in CMake scripts: General code cleaning and addition of comments.
|
||
Improved user information in case of failure. Improved detection of
|
||
dependencies in more processor architectures (e.g. aarch64).
|
||
|
||
### Improvements in Marketability:
|
||
|
||
- Reduced time from a commit to deployment (see virtualization mechanisms in
|
||
Portability).
|
||
|
||
### Improvements in Portability:
|
||
|
||
- Now GNSS-SDR can be run in virtual environments through snap packages (see
|
||
https://github.com/carlesfernandez/snapcraft-sandbox) and docker images (see
|
||
https://github.com/carlesfernandez/docker-gnsssdr).
|
||
- Now GNSS-SDR is adapted to cross-compiling environments for embedded devices
|
||
(see https://github.com/carlesfernandez/oe-gnss-sdr-manifest).
|
||
- BLAS and LAPACK libraries are no longer mandatory on ARM devices.
|
||
|
||
### Improvements in Scalability:
|
||
|
||
- Fixed bug in acquisition with rata rates higher than 16 Msps in 4ms code
|
||
periods.
|
||
|
||
### Improvements in Testability:
|
||
|
||
- Major QA source code refactoring: they has been split into
|
||
`src/tests/unit-tests` and `src/tests/system-tests` folders. They are
|
||
optionally built with the `ENABLE_UNIT_TESTING=ON` (unit testing QA code),
|
||
`ENABLE_UNIT_TESTING_EXTRA=ON` (unit tests that require extra files downloaded
|
||
at configure time), `ENABLE_SYSTEM_TESTING=ON` (system tests, such as
|
||
measurement of Time-To-First-Fix) and `ENABLE_SYSTEM_TESTING_EXTRA=ON` (extra
|
||
system test requiring external tools, automatically downloaded and built at
|
||
building time) configuration flags. The EXTRA options also download and build
|
||
a custom software-defined signal generator and version 2.9 of GPSTk, if not
|
||
already found on the system. Download and local link of version 2.9 can be
|
||
forced by `ENABLE_OWN_GPSTK=ON` building configuration flag. Only
|
||
`ENABLE_UNIT_TESTING` is set to ON by default.
|
||
- Unit tests added: `CPU_multicorrelator_test` and `GPU_multicorrelator_test`
|
||
measure computer performance in multicorrelator setups.
|
||
- Unit tests added: `GpsL1CADllPllTracking` and `GpsL1CATelemetryDecoderTest`.
|
||
- System test added: `ttff_gps_l1` performs a set of cold / assisted runs of the
|
||
software receiver and computes statistics about the obtained Time To First
|
||
Fix.
|
||
- System test added: `obs_gps_l1_system_test` uses an external software-defined
|
||
signal generator to produce raw digital GNSS signal from a RINEX navigation
|
||
file and a position (static or dynamic), processes it with GNSS-SDR, and then
|
||
compares the RINEX observation file produced by the software receiver to that
|
||
produced by the signal generator.
|
||
- Software Development Kit provided for embedded devices (see
|
||
https://gnss-sdr.org/docs/tutorials/cross-compiling/).
|
||
|
||
### Improvements in Usability:
|
||
|
||
- Now the block factory automatically detects Channel input data type, so it is
|
||
no longer required to specify Channel.input_type in the configuration. An
|
||
error raises if Acquisition and Tracking Blocks are not configured with the
|
||
same input data type.
|
||
- Block names changed from L2_M to L2C.
|
||
- Documentation available at https://gnss-sdr.org/docs/
|
||
- Improved tools for compilation, execution and testing in embedded devices.
|
||
|
||
See the definitions of concepts and metrics at
|
||
https://gnss-sdr.org/design-forces/
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.8](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.8) - 2016-07-04
|
||
|
||
[![DOI](https://zenodo.org/badge/doi/10.5281/zenodo.57022.svg)](http://dx.doi.org/10.5281/zenodo.57022)
|
||
|
||
This is a maintenance and bug fix release with no relevant new features with
|
||
respect to v0.0.7. The main changes are:
|
||
|
||
- Fixed a bug that broke building when using latest VOLK release
|
||
- Updated PYBOMBS instructions
|
||
- Added Tests for FFT length
|
||
- Added Tests for CUDA-based tracking
|
||
- Added Tests for SIMD-based tracking
|
||
- Improved CUDA-based correlation.
|
||
- Updated documentation
|
||
- Fixed building in mips and powerpc architectures.
|
||
- `gr-gn3s` and `gr-dbfcttc` moved to its own repository.
|
||
- Improved package reproducibility
|
||
- VOLK_GNSSSDR: Fixed a bug in AVX2 puppet
|
||
- VOLK_GNSSSDR: can now be built using the C98 standard
|
||
- VOLK_GNSSSDR: Fixed a bug that broke building when linking to Boost in some
|
||
configurations.
|
||
- VOLK_GNSSSDR: Added an option to trigger profiling at building time.
|
||
- VOLK_GNSSSDR: Fix the CMake-based check for posix_memalign.
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.7](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.7) - 2016-05-15
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.51521.svg)](https://doi.org/10.5281/zenodo.51521)
|
||
|
||
This release has several improvements, addition of new features and bug fixes:
|
||
|
||
- Improvements in receiver design: Internal block communication has been
|
||
redesigned to accommodate the addition of new signals, and now upstream and
|
||
downstream communication within blocks is implemented through the GNU Radio
|
||
block’s asynchronous message passing system, leading to a more scalable, more
|
||
robust and cleaner design.
|
||
- Improvements in receiver design: Correlators have been rewritten to take full
|
||
advantage of VOLK and VOLK_GNSSSDR, and they are of general use for any
|
||
tracking block. Their API now admit an arbitrary number of correlators, spaced
|
||
in an arbitrary manner, in 16ic and 32fc versions.
|
||
- Improvements in receiver design: Block adapters are now all managed by smart
|
||
pointers, ensuring better memory management.
|
||
- Improvements in processing speed: The VOLK_GNSSSDR library has been rewritten,
|
||
following current VOLK standards and adding a number of new kernels. This
|
||
approach addresses both efficiency and portability. Now the library provides
|
||
the key kernels for GNSS signal processing in 16ic and 32fc versions,
|
||
including SSE2, SSE3, SSE4.1, AVX, AV2 and NEON implementations. Please
|
||
execute `volk_gnsssdr_profile` and `volk_profile` to use the fastest
|
||
implementation for your host machine.
|
||
- New source block: `Two_Bit_Packed_File_Signal_Source`. This block takes 2 bit
|
||
samples that have been packed into bytes or shorts as input and generates a
|
||
byte for each sample.
|
||
- Fixes in SUPL assistance (supl.nokia.com removed).
|
||
- Improvements in acquisition: Added a non CFAR PCPS acquisition algorithm based
|
||
on the estimation of the post correlation noise floor. If enabled 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.)
|
||
- Fixes in acquisition: Fixed mismatch between the config files and the
|
||
acquisition code in the specification of the IF. Fixed a bug in the length of
|
||
the FFT of local codes.
|
||
- Improvements in tracking sensitivity: Added configuration option to customize
|
||
the extension of the GPS L1 CA correlation length after bit synchronization
|
||
(options are: [1,2,4,5,10,20] ms). Only available in the
|
||
`GPS_L1_CA_DLL_PLL_C_Aid_Tracking` implementation.
|
||
- New tracking block introduced: `GPS_L1_CA_DLL_PLL_C_Aid_Tracking` is a GPS L1
|
||
C/A carrier PLL and code DLL with optional carrier-aid feedback. It is
|
||
available in both 32 bits `gr_complex` input samples and in 16 bits short int
|
||
complex samples. The `gr_complex` version has also the capability to extend
|
||
the coherent correlation period from 1 ms to 20 ms using telemetry symbol
|
||
synchronization.
|
||
- Increased resolution in CN0 estimator internal variables.
|
||
- Fixed a bug in computation of GPS L1 C/A carrier phase observable.
|
||
- Fixed a bug in the internal state machine that was blocking the receiver after
|
||
a few hours of usage. Now the receiver can work continually (tested for more
|
||
than one week, no known limit).
|
||
- New tracking block introduced: `GPS_L1_CA_DLL_PLL_Tracking_GPU` is a GPS L1
|
||
C/A carrier PLL and code DLL that uses the CUDA-compatible GPU to compute
|
||
carrier wipe off and correlation operations, alleviating the CPU load.
|
||
- Obsolete/buggy blocks removed: `GPS_L1_CA_DLL_FLL_PLL_Tracking`,
|
||
`GPS_L1_CA_DLL_PLL_Optim_Tracking`.
|
||
- Added a RTCM printer and TCP server in PVT blocks (still experimental). The
|
||
receiver is now able to stream data in real time, serving RTCM 3.2 messages to
|
||
multiple clients. For instance, it can act as a Ntrip Source feeding a Ntrip
|
||
Server, or to be used as data input in RTKLIB, obtaining Precise Point
|
||
Positioning fixes in real-time. The TCP port, Station ID, and rate of
|
||
MT1019/MT1045 and MSM can be configured. `GPS_L1_CA_PVT` serves MT1019 (GPS
|
||
Ephemeris) and MSM7 (MT1077, full GPS pseudoranges, phase ranges, phase range
|
||
rates and CNR - high resolution) messages, while `GALILEO_E1_PVT` serves
|
||
MT1045 (Galileo ephemeris) and MSM7 (MT1097, full Galileo pseudoranges, phase
|
||
ranges, phase range rates and CNR - high resolution).
|
||
- Added a GeoJSON printer. Basic (least-squares) position fixes can be now also
|
||
stored in this format, in addition to KML.
|
||
- Obsolete block removed: output filter.
|
||
- QA code migrated to the new asynchronous message passing system.
|
||
- Improvements in documentation: update of `README.md` file, addition of
|
||
documentation for the VOLK_GNSSSDR library, updated links to new ICDs.
|
||
- Improvements in documentation: Satellite identification updated to current
|
||
constellation status.
|
||
- Updated and cleaner console output. Now Galileo satellites have the ‘E’
|
||
identifier in their PRN number.
|
||
- Several improvements in CMake scripts allow to build GNSS-SDR in Linux Debian
|
||
(Jessie, Stretch and Sid), Ubuntu (from 12.04 to 16.04), including amd64,
|
||
i386, armhf and arm64 architectures, and possibly in other GNU/Linux
|
||
distributions, as well as in Mac OS X 10.9 to 10.11. It also works well with
|
||
CMake 3.5 (some problems solved with VOLK_GNSSSDR as a sub-project).
|
||
- The software can link either against OpenSSL or against GnuTLS with openssl
|
||
extensions, whatever it is available. This allows buildings in distributions
|
||
such as Fedora or ArchLinux, while being compatible with binary distribution
|
||
through Debian packages.
|
||
- Fixed a number of defects detected by Coverity Scan.
|
||
- Some fixes required by Debian licensing and packaging system.
|
||
- Added a CGRAN (https://www.cgran.org/) manifest
|
||
- Lots of code cleaning and fixes of typos and small bugs.
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.6](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.6) - 2015-09-02
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.30104.svg)](https://doi.org/10.5281/zenodo.30104)
|
||
|
||
This release has several improvements and bug fixes:
|
||
|
||
- Added initial support to multi-band, multi-source configurations (multiple
|
||
signal sources and signal conditioners).
|
||
- Updated configuration files to new notation. Old and new configuration
|
||
notations still compatible.
|
||
- Added skeleton for mixed (multi-frequency and multi-system) observables block.
|
||
- Faster local carrier update (25% of improvement).
|
||
- Added initial support to GPS L2C real time tracking and decoding of CNAV
|
||
message with NSL STEREO v2, Fraunhofer’s Flexiband, and USRPx front-ends (the
|
||
latter requiring external clock).
|
||
- Added initial support to select the frontend clock reference source in UHD
|
||
signal source (i.e. internal or external clock reference).
|
||
- Added 2 bits complex file source for GNSS-SDR GSoC 2015 signal sampler
|
||
designed by Ajith Peter.
|
||
- Added a new rtl_tcp signal source, remote access to RTL2832U-based dongles via
|
||
TCP.
|
||
- Always build front-end-cal, a calibration tool for some DVB-T receivers based
|
||
on the Realtek's RTL2832U chipset.
|
||
- Fixed bug in UTC time computation for GPS signals.
|
||
- Updated satellite identification for GPS and Galileo.
|
||
- Defined `cbyte` as a new input data type (`std::complex<signed char>`).
|
||
- Adding a new data_type_adapter, from interleaved short to
|
||
`std::complex<short>`.
|
||
- Adding a filter for complex short streams.
|
||
- Adding a fir_filter for `std::complex<signed char>` (aka `cbyte`). It converts
|
||
the data type to floats, filters, and converts back to cbyte.
|
||
- Added a resampler for `cbyte`s and `cshort`s.
|
||
- First working version of a GPS tracking block implementation using CUDA with
|
||
multi-GPU device support.
|
||
- Updating RINEX obs header when leap second is available.
|
||
- Updating RINEX nav file when IONO and UTC data are available.
|
||
- Include Signal Strength Indicator in RINEX observable files.
|
||
- Tests fixed.
|
||
- Fixed more than 200 code defects detected by Coverity Scan.
|
||
- Updated documentation.
|
||
- Updated documentation and CMake scripts for the GN3S v2 driver (Linux-only)
|
||
- Armadillo version automatically downloaded and built if it is not present in
|
||
the system is now 5.400.3.
|
||
- Updated old links from googlecode to new links at GitHub for Google Test,
|
||
gflags, glog and gperftools.
|
||
- gfortran is no longer a required package, but it is used if available.
|
||
- Added an option to remove logging.
|
||
- Enabled cross-compilation for ARM devices.
|
||
- Lots of code cleaning.
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.5](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.5) - 2015-01-13
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.13920.svg)](https://doi.org/10.5281/zenodo.13920)
|
||
|
||
This release has several improvements and bug fixes:
|
||
|
||
- Now GNSS-SDR can be installed on the system with the usual
|
||
`cmake ../ && make && sudo make install`.
|
||
- Added `volk_gnsssdr` library, a volk-like library implementing some specific
|
||
kernels and ensuring portable executables. It comes with a
|
||
`volk_gnsssdr_profile` executable, in the fashion of `volk_profile`. Volk and
|
||
`volk_gnsssdr` are compatible and can be mixed together. This is expected to
|
||
enable faster execution of the software receiver in upcoming versions.
|
||
- The former `rtlsdr_signal_source` has been replaced by a more general
|
||
`osmosdr_signal_source` compatible with all those front-ends accessible by the
|
||
OsmoSDR driver (bladeRF, hackRF, etc.) in addition to RTL-based dongles.
|
||
- Added manpages when binaries `gnss-sdr`, `volk_gnsssdr_profile` and
|
||
`front-end-cal` are installed.
|
||
- Now GNSS-SDR can be built on i386, amd64, armhf, armel and arm64
|
||
architectures.
|
||
- Now GNSS-SDR builds on Ubuntu 14.04 and 14.10, Debian jessie/sid and Mac OS X
|
||
10.9 and 10.10.
|
||
- Improved detection of dependencies, specially when installed as .deb packages.
|
||
- Added a `check` target with some minimal tests.
|
||
- Added support for interleaved I/Q byte-size sample files.
|
||
- Minor bug fixes, updated documentation and code cleaning.
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.4](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.4) - 2014-09-08
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.11628.svg)](https://doi.org/10.5281/zenodo.11628)
|
||
|
||
This release has several improvements and bug fixes:
|
||
|
||
- Added hybrid processing GPS L1 C/A and Galileo E1B, providing position fixes
|
||
make use of observables for both constellations.
|
||
- Added implementations of the QuickSync algorithm for GPS L1 C/A and Galileo E1
|
||
acquisition.
|
||
- Added processing blocks for Galileo E5a: Acquisition, Tracking,
|
||
Telemetry_Decoder (experimental)
|
||
- New configuration files allow to configure GPS and Galileo channels in the
|
||
same receiver.
|
||
- Added tropospheric corrections to GPS and Galileo PVT solution.
|
||
- Improved precision obtained by changing some variables from float to double.
|
||
- New building options: `ENABLE_GN3S`, `ENABLE_RTLSDR`, `ENABLE_ARRAY`, and
|
||
`ENABLE_OPENCL`.
|
||
- Improved documentation on how to enable optional drivers.
|
||
- Fixed bug in memory alignment that caused problems with high data rates.
|
||
- Added `ENABLE_GENERIC_ARCH`, an option to build the binary without detecting
|
||
the SIMD instruction set present in the compiling machine, so it can be
|
||
executed in other machines without those specific sets.
|
||
- Added `ENABLE_GPERFTOOLS`, which links the executable to tcmalloc and profiler
|
||
if Gperftools is available on the system.
|
||
- Added carrier phase, Doppler shift and signal strength observables to the
|
||
RINEX files. Static PPP solutions are available for GPS with RTKLIB via RINEX
|
||
files.
|
||
- The executable now produces RINEX files version 3.02 of Galileo Observables,
|
||
Navigation data, and mixed (GPS/Galileo) observables and nav data. RINEX 3.02
|
||
is the default version of RINEX files.
|
||
- Armadillo version updated to 4.400.2
|
||
- Armadillo now uses OpenBLAS instead of BLAS if the former is available on the
|
||
system.
|
||
- Some raw pointers have been changed to smart pointers.
|
||
- Minor bug fixes and code cleaning.
|
||
|
||
|
||
|
||
## [GNSS-SDR v0.0.3](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.3) - 2014-06-30
|
||
|
||
[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.10708.svg)](https://doi.org/10.5281/zenodo.10708)
|
||
|
||
This release has several improvements and bug fixes, completing the transition
|
||
from Subversion to Git. The main changes are:
|
||
|
||
- Created some missing directories lost in the SVN to Git transition.
|
||
- New C++11-ized block factory, flow graph and tests, resulting in better memory
|
||
management and fewer segmentation faults. Several raw pointers converted to
|
||
smart pointers.
|
||
- Reorganization of assistance data input and output.
|
||
- Fixed memory leak when talking to SUPL servers.
|
||
- Improved retrieval of assistance data.
|
||
- Fixing an error in a constant value related to Galileo.
|
||
- Inform users if the temporal folder is not /tmp.
|
||
- Fixes and additions to the documentation.
|
||
- README in markdown language so it looks better in Git repositories.
|
||
- Fixed a bug that prevented the update of all shared map structures (ephemeris,
|
||
iono parameters, etc…).
|
||
- The configuration script now throws error if GCC is older than 4.7 or Boost is
|
||
older than 1.45
|
||
- Improved detection / downloading & building if missing of Gflags and Glog.
|
||
- Improved detection / downloading & building if missing of Armadillo and
|
||
related dependencies.
|
||
- Fixes many warnings that appeared when using CMake 3.0.
|
||
- Improved detection of GTEST_DIR variable.
|
||
- Include header files in libraries so IDEs such as Xcode can display them.
|
||
|
||
Enjoy it!
|