Product Manual

386
Output Message Library
NOTES:
• The sequence tag for GLONASS satellites is x seconds less
than the sequence tag for GPS satellites, due to the
difference between the UTC (used for GLONASS) and GPS
system time scales.
• The raw range for GLONASS satellites contains a time
shift of x seconds, i.e. x seconds more than for GPS
Unsigned char 1
Indicates quality of the position measurement (good/
bad)
0: Measurement not available and no additional data will
be sent.
23: Code and/or carrier phase measured, navigation
message was obtained and measurement was used to
compute position but position wasn’t finally computed.
24: Code and/or carrier phase measured, navigation
message was obtained, measurement was used to
compute position and position was computed success-
fully.
Other state: measurement was not used to compute
position.
Unsigned char 1
Polarity of the phase tracking
0: Polarity unknown
5: Polarity known
Unsigned char 1 Signal-to-noise ratio for satellite observation (db.Hz)
Unsigned char 1 Always 0. Not used.
Double 8 Full carrier phase measurements in cycles
Double 8
Raw range to SV (in seconds),
i.e. receive time - raw range = transit time
Long 4
Doppler (10
-4
Hz)
Long 4
Smoothing
Bits 0-22: magnitude of smooth correction in centime-
ters
Bit 23: sign of smooth correction
Bits 24-31: smooth count, unsigned, as follows:
0=unsmoothed
1=least smoothed
255=most smoothed
29
L1 block, same format as C/A code data block (see
note below)
29
L2 block, same format as C/A code data block (see
note below)
Unsigned char 1 Checksum, a bytewise exclusive OR (XOR)
Total of bytes 95
Type Size Contents