Novatel OM-20000041 用户手册
D
Logs summary
168
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
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, Page 106.
Track mag = Track true + (MAGVAR correction)
See the MAGVAR command, Page 106.
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, kilometers/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]