D Logs summary

204 MiLLennium Command Descriptions Manual

VLHB

Format: Message ID = 34 Message byte count = 72

Table D-12 GPSCard Velocity Status

Field # Data Bytes Format Units Offset
1 Sync 3 char 0
(header) Checksum 1 char 3
Message ID 4 integer 4
Message byte count 4 integer 8
2 Week number 4 integer weeks 12
3Seconds of week 8 double seconds 16
4Latency 8 double metres per second 24
5Age 8 double seconds 32
6Horizontal speed 8 double metres per second 40
7Track over ground (TOG) 8 double degrees 48
8Vertical speed 8 double metres per second 56
9Solution status 4 integer 64
10 Velocity status 4 integer 68
Value Description
0 Velocity computed from differentially corrected carrier phase data
1 Velocity computed from differentially corrected Doppler data
2 Old velocity from differentially corrected phase or Doppler (higher latency)
3Velocity from single point computations
4 Old velocity from single point computations (higher latency)
5Invalid velocity
Higher values reserved for future use