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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| --- | ||
| title: "GNSS-SDR v0.0.19 released" | ||
| excerpt: "GNSS-SDR v0.0.19 has been released." | ||
| header: | ||
| teaser: /assets/images/logo-gnss-sdr-new-release.png | ||
| tags: | ||
| - news | ||
| author_profile: false | ||
| sidebar: | ||
| nav: "news" | ||
| last_modified_at: 2024-01-24T08:54:02+02:00 | ||
| --- | ||
|
|
||
| This release provides bug fixes and new features. Most relevant changes with | ||
| respect to the former release are listed below: | ||
|
|
||
| ## Improvements in [Efficiency]({{ "/design-forces/efficiency/" | relative_url }}): | ||
|
|
||
| - Fixed some performance inefficiencies detected by Coverity Scan. | ||
|
|
||
| ## Improvements in [Interoperability]({{ "/design-forces/interoperability/" | relative_url }}): | ||
|
|
||
| - Added a new PVT configuration boolean flag (`flag_geohash_log_out`) that | ||
| enables or disables the Position Geohash tag output in INFO log files. Set to | ||
| `false` by default. | ||
| - New fields have been added to the custom output stream defined by | ||
| `monitor_pvt.proto`: | ||
| - `utc_time` (a [RFC 3339](https://www.rfc-editor.org/rfc/rfc3339) datetime | ||
| string), | ||
| - velocity in the local ENU frame (`vel_e`, `vel_n`, and `vel_u`), in m/s, | ||
| - the course over ground, `cog`, in degrees, | ||
| - the status of the Galileo's High Accuracy Service, `galhas_status`: | ||
| - 0: HAS data not available | ||
| - 1: HAS Corrections applied | ||
| - `geohash`, an | ||
| [encoded geographic location](https://en.wikipedia.org/wiki/Geohash). | ||
|
|
||
| ## Improvements in [Maintainability]({{ "/design-forces/maintainability/" | relative_url }}): | ||
|
|
||
| - Removed useless casts and shadowed variables, improving source code | ||
| readability. | ||
|
|
||
| ## Improvements in [Portability]({{ "/design-forces/portability/" | relative_url }}): | ||
|
|
||
| - Updated local `cpu_features` library to v0.9.0. | ||
| - `volk_gnsssdr`: fix syntax for Python 3.12 without breaking backward | ||
| compatibility with Python 2.7. | ||
| - Fixed linking against GNU Radio v3.10.9.1. | ||
| - Make use of new API if linking against VOLK >= 3.1. | ||
| - Fixed undefined behaviour in `volk_gnsssdr` arising from incompatibility | ||
| between complex numbers in C and C++. | ||
| - Now build system paths are not leaked when cross-compiling. | ||
| - Enabled building using macOS Sonoma and `arm64` processor architecture. | ||
|
|
||
| ## Improvements in [Repeatability]({{ "/design-forces/repeatability/" | relative_url }}): | ||
|
|
||
| - A Kalman filter is now available in the PVT block, smoothing the outputs of a | ||
| simple Least Squares solution and improving the precision of delivered fixes. | ||
| It can be enabled by setting `PVT.enable_pvt_kf=true` in the configuration | ||
| file. The user can set values for the measurement and process noise | ||
| covariances with the following optional parameters (here with their default | ||
| values): `PVT.kf_measures_ecef_pos_sd_m=1.0`, in [m]; | ||
| `PVT.kf_measures_ecef_vel_sd_ms=0.1`, in [m/s]; | ||
| `PVT.kf_system_ecef_pos_sd_m=2.0`, in [m]; and | ||
| `PVT.kf_system_ecef_vel_sd_ms=0.5`, in [m/s]. | ||
|
|
||
| ## Improvements in [Scalability]({{ "/design-forces/scalability/" | relative_url }}): | ||
|
|
||
| - Fixed some potential data race conditions detected by Coverity Scan. | ||
|
|
||
| ## Improvements in [Usability]({{ "/design-forces/usability/" | relative_url }}): | ||
|
|
||
| - The Galileo E1B Reduced CED parameters usage has been set to `false` by | ||
| default. You can activate its usage with `Galileo_E1B_Telemetry_Decoder=true` | ||
| in your configuration file. | ||
| - The generation of Galileo E6B observables has been disabled if the user sets | ||
| `PVT.use_e6_for_pvt=false`, fixing the PVT computation in some multi-band | ||
| configurations. | ||
| - Fix bug in the custom binary output (`PVT.enable_monitor=true`) output rate. | ||
| Before this fix, it was outputting data every 20 ms, instead of observing the | ||
| `PVT.output_rate_ms` setting. | ||
| - Now the program exits properly if a SIGINT signal is received (_e.g._, the | ||
| user pressing Ctrl+C, or another user application sending an interruption | ||
| signal). | ||
| - The estimated CN0 value is now printed in the terminal when navigation data is | ||
| succesfully decoded. | ||
| - Fixed GPS navigation message satellite validation. | ||
| - Latitude and longitude are now reported in the terminal with six decimal | ||
| places (the sixth decimal place worths up to 0.11 m), instead of the | ||
| overkilling nine (the ninth decimal place worths up to 110 microns). | ||
| Similarly, height in meters is now reported with two decimal places instead of | ||
| three, and velocity in m/s also with two decimal places instead of three. | ||
| - Fixed the rate at which KLM, GPX, GeoJSON, and NMEA annotations are made. The | ||
| rate is now set by `PVT.output_rate_ms` (`500` ms by default), and can be | ||
| particularized by `PVT.kml_rate_ms`, `PVT.gpx_rate_ms`, `PVT.geojson_rate_ms`, | ||
| and `PVT.nmea_rate_ms`. Those values should be multiples of | ||
| `PVT.output_rate_ms`, or the least common multiple will be taken. | ||
|
|
||
|
|
||
| ----- | ||
|
|
||
|
|
||
| As usual, compressed tarballs are available from [GitHub](https://github.com/gnss-sdr/gnss-sdr/releases/tag/v0.0.19) and [Sourceforge](https://sourceforge.net/projects/gnss-sdr/). | ||
|
|
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