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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| --- | ||
| title: "GNSS-SDR v0.0.18 released" | ||
| excerpt: "GNSS-SDR v0.0.18 has been released." | ||
| header: | ||
| teaser: /assets/images/logo-gnss-sdr-new-release.png | ||
| tags: | ||
| - news | ||
| author_profile: false | ||
| sidebar: | ||
| nav: "news" | ||
| last_modified_at: 2023-04-06T08:54:02+02:00 | ||
| --- | ||
|
|
||
| This release provides bug fixes and new features. Most relevant changes with | ||
| respect to the former release are listed below: | ||
|
|
||
| ## Improvements in [Accuracy]({{ "/design-forces/accuracy/" | relative_url }}): | ||
|
|
||
| - Processing and application of the corrections provided by the Galileo High | ||
| Accuracy Service (HAS) to the PVT solution. It requires at least a Galileo E1 | ||
| (or E5a) + Galileo E6B configuration. A new configuration parameter | ||
| `PVT.use_has_corrections`, set to `true` by default, can be used to deactivate | ||
| the application of HAS corrections but still retrieve the HAS data if set to | ||
| `false`. | ||
|
|
||
| ## Improvements in [Availability]({{ "/design-forces/availability/" | relative_url }}): | ||
|
|
||
| - Fixed bug that made the PVT block to not resolve position anymore after a loss | ||
| of samples event. | ||
| - Improved non-coherent acquisition when `Acquisition_XX.blocking=false`. | ||
| - Implemented processing of BeiDou PRN 34 up to PRN 63 signals. | ||
| - Implemented Hamming code correction for Glonass navigation message. | ||
| - Now the first iteration of the PVT computation is initialized by the Bancroft | ||
| method. This allows to get PVT fixes in some unusual geometries (_e.g._, | ||
| GNSS-like signals transmitted by LEO satellites). This initialization is | ||
| performed by default. You can opt-out by setting `PVT.bancroft_init=false` in | ||
| your configuration file. | ||
|
|
||
| ## Improvements in [Interoperability]({{ "/design-forces/interoperability/" | relative_url }}): | ||
|
|
||
| - Enabled PVT computation in the Galileo E5a + E5b receiver. Observables | ||
| reported in the RINEX file. | ||
| - Fixed PVT computation in the Galileo E5b-only receiver. | ||
| - Get E6B observables and PVT solutions in the Galileo E1B + E6B receiver. | ||
| Decoding of HAS messages as described in the | ||
| [HAS SIS ICD v1.0](https://www.gsc-europa.eu/sites/default/files/sites/all/files/Galileo_HAS_SIS_ICD_v1.0.pdf). | ||
| Generation of RTCM 3.2 messages from the received HAS messages in the | ||
| [IGS State Space Representation (SSR) Format](https://files.igs.org/pub/data/format/igs_ssr_v1.pdf). | ||
| Specifically, it generates messages of type IGM01 (SSR Orbit Correction), | ||
| IGM02 (SSR Clock Correction), IGM03 (SSR Combined Orbit and Clock Correction), | ||
| and IGM05 (SSR Code Bias). | ||
| - Added a `ZMQ_Signal_Source` for working with streams of samples published via | ||
| [ZeroMQ](https://zeromq.org/). | ||
| - Fixed register unpacking for Labsat3W files in `Labsat_Signal_Source`. This | ||
| fix is only available if gnss-sdr is linked against Boost >= 1.58.0. | ||
|
|
||
| ## Improvements in [Maintainability]({{ "/design-forces/maintainability/" | relative_url }}): | ||
|
|
||
| - The now archived [GPSTk toolkit](https://github.com/SGL-UT/GPSTk), used in | ||
| some optional tests and applications, has been replaced by the new | ||
| [GNSSTk](https://github.com/SGL-UT/gnsstk) C++ Library. Compatibility with the | ||
| former GPSTk toolkit is maintained. | ||
|
|
||
| ## Improvements in [Portability]({{ "/design-forces/portability/" | relative_url }}): | ||
|
|
||
| - Improved detection of the BLAS library under macOS / Macports (the `lapack` | ||
| port dependency installed with the `+openblas` variant does not install `blas` | ||
| but `openblas`, which is used as a replacement if `blas` is not found). | ||
| - Removed duplicated files in the Secure User Plane Location implementation, | ||
| which caused issues when linking with some compilers. | ||
| - Added support for Xilinx's Zynq UltraScale+ devices (requires the | ||
| `-DENABLE_FPGA=ON` building option). | ||
| - Fixed running time error if the `gnss-sdr` binary and/or the GNU Radio | ||
| libraries were built with the `-D_GLIBCXX_ASSERTIONS` compiler option. This is | ||
| added by default in some GNU/Linux distributions (e.g., ArchLinux and Fedora). | ||
| - Fixed linking against libunwind when the glog library is built locally. | ||
| - The configuration options at building time `-DENABLE_OWN_GLOG`, | ||
| `-DENABLE_OWN_ARMADILLO`, and `-DENABLE_OWN_GNSSTK` can now be switched `ON` | ||
| and `OFF` without the need to start from an empty buiding folder. | ||
| - Improved CMake handling of the spdlog library used by GNU Radio >= 3.10. | ||
| - Make use of the C++20 standard if the environment allows for it. | ||
| - Improved passing of compiler flags to `volk_gnsssdr` if the corresponding | ||
| environment variables are defined. This fixes warnings in some packaging | ||
| systems. | ||
| - Improved support for the RISC-V architecture. | ||
| - Test files are now donwloaded at configuration time instead of being included | ||
| in the source tree. This allows for a smaller package and fixes Lintian | ||
| `very-long-line-length-in-source-file` warnings since those files were not | ||
| recognized as binaries. The configuration flag `-DENABLE_PACKAGING=ON` passed | ||
| to CMake deactivates file downloading. | ||
| - The `ENABLE_GENERIC_ARCH` building option was removed, simplifying the process | ||
| of buiding the software in non-x86 processor architectures. | ||
| - If the Protocol Buffers dependency is not found, it is downloaded, built and | ||
| statically linked at buiding time. If CMake >= 3.13 and the | ||
| [Abseil C++ libraries](https://github.com/abseil/abseil-cpp) >= 20230117 are | ||
| installed on your system, Protocol Buffers v22.2 will be used. If those | ||
| requirements are not met, Protocol Buffers v21.4 will be used instead | ||
| (requires autotools). | ||
| - Since Debian 8 "Jessie", which enjoyed Long Term Support until the end of June | ||
| 2020, is not anymore in the Debian official repositories, we drop its support. | ||
| - Fixes for GCC 13 and Clang 16. | ||
|
|
||
| ## Improvements in [Usability]({{ "/design-forces/usability/" | relative_url }}): | ||
|
|
||
| - Fixed large GLONASS velocity errors and the extended correlator when using the | ||
| `GLONASS_L1_CA_DLL_PLL_C_Aid_Tracking` and | ||
| `GLONASS_L2_CA_DLL_PLL_C_Aid_Tracking` implementations. | ||
| - The `UHD_Signal_Source` learned a new parameter `otw_format` for setting the | ||
| [over-the-wire data format](https://files.ettus.com/manual/page_configuration.html#config_stream_args_otw_format) | ||
| (that is, the format used between the device and the UHD) in some devices, | ||
| thus allowing to select the `sc8` format instead of the default `sc16`. This | ||
| would reduce the dynamic range and increase quantization noise, but also | ||
| reduce the load on the data link and thus allow more bandwidth. | ||
| - The `UHD_Signal_Source` learned another two optional parameters: | ||
| `device_recv_frame_size` and `device_num_recv_frames` for overriding | ||
| [transport layer defaults](https://files.ettus.com/manual/page_transport.html). | ||
| - Added gain setting and reading for the XTRX board when using the | ||
| `Osmosdr_Signal_Source` implementation of a `SignalSource`. | ||
| - The `Osmosdr_Signal_Source` implementation learned a new parameter `if_bw` to | ||
| manually set the bandwidth of the bandpass filter on the radio frontend. | ||
| - The new configuration parameter `Channels_XX.RF_channel_ID` allows to specify | ||
| the signal source per channel group. | ||
| - New configuration parameter `PVT.use_unhealthy_sats`, set by default to | ||
| `false`, allows processing observables of satellites that report an unhealthy | ||
| status in the navigation message if set to `true`. | ||
| - Added the [Geohash](https://en.wikipedia.org/wiki/Geohash) of the PVT solution | ||
| in the internal logs. | ||
| - Allowed the CMake project to be a sub-project. | ||
|
|
||
| ----- | ||
|
|
||
|
|
||
| As usual, compressed tarballs are available from [GitHub](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.18) and [Sourceforge](https://sourceforge.net/projects/gnss-sdr/). | ||
|
|
||
| <a href="https://doi.org/10.5281/zenodo.7805514" ><i class="ai ai-fw ai-doi ai-lg" aria-hidden="true"></i></a>In order to make GNSS-SDR more easily referenced, and to promote reproducible research, each software release gets a Digital Object Identifier provided by [Zenodo](https://zenodo.org/faq). The DOI for GNSS-SDR v0.0.18 is [10.5281/zenodo.7805514](https://doi.org/10.5281/zenodo.7805514). | ||
| {: .notice--info} |
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