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Fix value

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This commit is contained in:
Carles Fernandez 2018-11-24 23:43:48 +01:00
parent 3f89ed8e6b
commit 8c48b80e8b
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GPG Key ID: 4C583C52B0C3877D
4 changed files with 37 additions and 3 deletions

2
src/core/system_parameters/galileo_navigation_message.cc

@ -306,7 +306,7 @@ int64_t Galileo_Navigation_Message::read_navigation_signed(std::bitset<GALILEO_D
// read the MSB and perform the sign extension
if (bits[GALILEO_DATA_JK_BITS - parameter[0].first] == 1)
{
value ^= 0x0FFFFFFFFFFFFFFFLL; // 64 bits variable
value ^= 0x3FFFFFFFFFFFFFFFLL; // 64 bits variable
}
else
{

2
src/core/system_parameters/gps_cnav_navigation_message.cc

@ -115,7 +115,7 @@ int64_t Gps_CNAV_Navigation_Message::read_navigation_signed(std::bitset<GPS_CNAV
// read the MSB and perform the sign extension
if (bits[GPS_CNAV_DATA_PAGE_BITS - parameter[0].first] == 1)
{
value ^= 0x0FFFFFFFFFFFFFFFLL; // 64 bits variable
value ^= 0x3FFFFFFFFFFFFFFFLL; // 64 bits variable
}
else
{

2
src/core/system_parameters/gps_navigation_message.cc

@ -203,7 +203,7 @@ int64_t Gps_Navigation_Message::read_navigation_signed(std::bitset<GPS_SUBFRAME_
// read the MSB and perform the sign extension
if (bits[GPS_SUBFRAME_BITS - parameter[0].first] == 1)
{
value ^= 0x0FFFFFFFFFFFFFFFLL; // 64 bits variable
value ^= 0x3FFFFFFFFFFFFFFFLL; // 64 bits variable
}
else
{

34
src/utils/rinex2assist/README.md Normal file

@ -0,0 +1,34 @@
Rinex2assist
------------
This program generates ephemeris XML files from RINEX navigation data files. The usage is as follows:
```
$ rinex2assist /path/to/RINEX_nav_file
```
The argument is mandatory (the name of the RINEX navigation file). The name `gps_ephemeris.xml` is given to the output if GPS NAV data is fould. If the RINEX file contains Galileo data, the corresponding `gal_ephemeris.xml` file will be generated. The program is also able to extract parameters of the UTC and the Ionospheric models from the RINEX header, if available. They will be called `gps_utc_model.xml`, `gps_iono.xml`, `gal_utc_model.xml` and `gal_iono.xml`.
The program accepts either versions 2.xx or 3.xx for the RINEX navigation data file.
There are some servers available for downloading RINEX navigation files. For instance:
* NASA: [ftp://cddis.gsfc.nasa.gov/pub/gnss/data/hourly/](ftp://gssc.esa.int/gnss/data/hourly/)
* ESA: [ftp://gssc.esa.int/gnss/data/hourly/](ftp://gssc.esa.int/gnss/data/hourly/)
Just make sure to pick up a [station near you](http://gpspp.sakura.ne.jp/gmap/igsnet.htm).
An example of GNSS-SDR configuration using ephemeris and UTC and ionospheric model parameters for GPS L1 and Galileo signals is shown below:
```
GNSS-SDR.AGNSS_XML_enabled=true
GNSS-SDR.AGNSS_ref_location=41.39,2.31
GNSS-SDR.AGNSS_gps_ephemeris_xml=gps_ephemeris.xml
GNSS-SDR.AGNSS_gps_iono_xml=gps_iono.xml
GNSS-SDR.AGNSS_gps_utc_model_xml=gps_utc_model.xml
GNSS-SDR.AGNSS_gal_ephemeris_xml=gal_ephemeris.xml
GNSS-SDR.AGNSS_gal_iono_xml=gal_iono.xml
GNSS-SDR.AGNSS_gal_utc_model_xml=gal_utc_model.xml
```
More info about the usage of AGNSS data [here](https://gnss-sdr.org/docs/sp-blocks/global-parameters/#assisted-gnss-with-xml-files).