GPS01
VTG – Course Over Ground and Ground Speed
The actual course and speed relative to the ground.
Structure:
GPVTG,x.x,T,,M,x.x,N,x.x,K,a*hh<CR><LF>
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Example:
$GPVTG, 000.0,T,,M,000.0,N,0000.0,K,A*3D<CR><LF>
Field Name
Example
000.0
000.0
Description
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3
Course
Speed
Speed
True course over ground in degrees (000.0 ~ 359.9)
Speed over ground in knots (000.0 ~ 999.9)
Speed over ground in kilometers per hour (0000.0 ~
1800.0)
0000.0
4
Mode
A
Mode indicator
‘N’ = not valid
‘A’ = Autonomous mode
‘D’ = Differential mode
‘E’ = Estimated (dead reckoning) mode
‘M’ = Manual input mode
‘S’ = Simulator mode
5
Checksum
3D
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