NMEA-0183 message: HDT
Heading from True North
NOTE – The heading computation in this message is computed from the moving baseline vector, which requires a two-antenna system.
An example of the HDT string is:
$GPHDT,123.456,T*00
Heading from true north message fields
|
Field |
Meaning |
|---|---|
|
0 |
Message ID $GPHDT |
|
1 |
Heading in degrees |
|
2 |
T: Indicates heading relative to True North |
|
3 |
The checksum data, always begins with * |