GLONASS Ephemeris Format

One thought on “GLONASS Ephemeris Format

  1. How are the bits packed in the $PSTMEPHEM data
    response message for the GLONASS satellites?  I would like to have
    access to the actual GLONASS broadcast ephemeris parameters including
    the health bits, raw clock terms, and the orbital position, velocity,
    and acceleration terms broadcast in the 50 bps data stream.

    example of the output is …


    with 64 2-byte words as the data payload.  The resultig bit stream starts as …. 

    (the "0xF5" and "0x06" words).  How does this bit stream align with the
    strings 1-4 of the GLONASS immediate data?


    Thanks in advance for the help.