Assisted GLONASS (A-GLONASS) data are now available to GDGPS customers, to enhance the performance of GLONASS chipsets.

The GLONASS navigation message, the GLONASS broadcast ephemeris and the GLONASS Almanac are redundantly provided from all three GDGPS Operations Centers (GOCs). The GLONASS navigation message, bit-by-bit, is provided as a real-time UDP binary data stream. The broadcast ephemeris and Almanac are provided in RINEX-like file formats from the GDGPS sFTP servers with a few minute latency.

More information on GLONASS predictions can be found here