Specifications

VP ONCORE COMMAND REFERENCE
6 CHANNEL SATELLITE RANGE DATA OUTPUT
MESSAGE (@@Bg)
continued
For each of six channels:
i - satellite ID 0.. 32
0 = channel not used
1 = 32 satellite ID
m - channel tracking mode where bits 0 - 3 are decoded as
0 - code search
1 - code acquire
2 - AGC set
3 - frequency acquire
4 - bit sync detect
5 - message sync detect
6 - sat time available
7 - ephemeris acquire
8 - avail for position
where bit 6 is decoded as:
0 - frequency locked since last range message
1 - not frequency locked since last range message
and where bit 7 (MSB) is decoded as
0 - phase locked since last range message
1 - not phase locked since last range message
sssfiff - GPS satellite time (Integrated Carrier Phase Filtered)
sss - integer part 0 .. 604799
(resolution - 1 sec)
ffff - fractional part 0 .. 999,999,999
(resolution - 1 nsec) (0 .. 0.999999999)
ccff - integrated carrier phase
cc - integer part 0 .. 65535
16 MS bits of carrier (cycles)
phase (above decimal point)
ff - fractional part 0 .. 65535
16 bits of carrier NCO below (0 .. 359.9945 degrees)
decimal point at
measurement epoch
rrr - raw code phase (carrier cycles) 0 .. 1575420
dd - code discriminator -32,768 .. 32767
output at measurement epoch
LSB = (2
-12
) * SOL * 0.001/28644 meters
C - checksum
Message Length: 122 bytes
86 Synergy Systems, LLC 05OCT01