Orolia GSG-5 Series, User Manual With Scpi Manual, Page: 201 / 392

After each six hours or when the scenario is stopped, the navigation data is saved to:
/observations/scenarioNameYYYYMMDDHHMMSS.nav
The generated files can be retrieved via GSG StudioView , the Web UI, or by using SCPI
commands (see "MMEMory:COPY" on page 321 ).
Additionally, a link named
/observations/latest.nav
points to the latest generated
file.
The files are in RINEX 3.0.2 mixed format. As the unit generates new navigation data
sets quite rarely, it is recommended that navigation data logging is enabled before starting
a scenario. Navigation data logging is turned off when scenario stops.
5.7 YUMA Almanac File
During scenario start-up, the GSG simulator generates a GPS constellation almanac in the
Yuma format. The generated file is named
observations/alm_ gps.txt
and can be
retrieved from the observations folder, using:
the StudioView File Manager
the GSG Web UI
the SCPI command set.
Note: This file will be overwritten every time a new scenario is started, so
only the YUMA file for the last run scenario will be available.
The almanac file will be empty, if GPS satellites were not included in the latest scenario
executed.
The following is an example of one entry in the almanac file:
******** Week 755 almanac for PRN-01 ********
ID: 01
Health: 000
Eccentricity: 5.8191653807E-04
Time of Applicability(s): 233472.0000
Orbital Inclination(rad): 0.9597571420
Rate of Right Ascen(r/s): -8.1828408482E-09
SQRT(A) (m 1/2): 5153.650309
Right Ascen at Week(rad): 1.271000
5.7 YUMA Almanac File
User Manual GSG-5/6 Series Rev. 27 185