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D Logs summary
MiLLennium Command Descriptions Manual 151
GPVTG Track Made Good And Ground Speed
The track made good and speed relative to the ground.
Structure:
Example:
$GPVTG,24.168,T,24.168,M,0.4220347,N,0.781608,K*7A[CR][LF]
$GPVTG track true T track mag M speed Km
N speed km K *xx [CR][LF]
Field Structure Field Description Symbol Example
1 $GPVTG Log header $GPVTG
2 track true Track made good, degrees True x.x 24.168
3 T True track indicator T T
4 track mag Track made good, degrees Magnetic;
Track mag = Track true + (MAGVAR correction)
See the MAGVAR command.
x.x 24.168
5 M Magnetic track indicator M M
6 speed Kn Speed over ground, knots x.x 0.4220347
7 N Nautical speed indicator (N = Knots) N N
8 speed Km Speed, kilometres/hour x.x 0.781608
9 K Speed indicator (K = km/hr) K K
10 *xx Checksum *hh *7A
11 [CR][LF] Sentence terminator [CR][LF]