Up-to-Date Almanac and Ephemeris Files for NI-GNSS Toolkit

Issue Details

I'm using NI-GNSS toolkit for simulate GPS/GLONASS signals. NI provides outdated Almanac and Ephemeris files with it. Where could I find recent Almanac and Ephemeris files?

Solution

GPS 

• Almanac files: USCG Navigational Center GPS Almanac Information
• Ephemeris files: Information And Analysis Center For Positioning, Navigation And Timing Ephemeris repositorium .

GLONASS

• Almanac files: Information And Analysis Center For Positioning, Navigation And Timing Almanac repositorium 
• Ephemeris files: Information And Analysis Center For Positioning, Navigation And Timing Ephemeris repositorium 

Additional Information

Selecting GPS Almanac Files
The toolkit requires you to provide almanac files in the SEM file format (.al3 or .AL3). You can use a custom almanac file; however, the file must conform to the SEM file format.
Selecting GPS Ephemeris Files
The toolkit requires you to provide ephemeris files that conform to the Receiver Independent Exchange (RINEX) 2.0 format. You can use a custom ephemeris file; however, the file must conform to the RINEX 2.0 format.

Selecting GLONASS Almanac Files
The toolkit requires you to provide almanac files in .agl format. You can use a custom almanac file; however, the file must conform to the .agl file format.
Selecting GLONASS Ephemeris Files
The toolkit requires you to provide ephemeris files that conform to the Receiver Independent Exchange (RINEX) 2.01 format. You can use a custom ephemeris file; however, the file must conform to the RINEX 2.01 format.