NMEA-0183 message: GST
Position error statistics
An example of the GST message string is:
$GPGST,172814.0,0.006,0.023,0.020,273.6,0.023,0.020,0.031*6A
The Talker ID ($--) will vary depending on the satellite system used for the position solution:
-
$GP - GPS only
-
$GL - GLONASS only
-
$GN - Combined
GST message fields
|
Field |
Meaning |
|---|---|
|
0 |
Message ID $GPGST |
|
1 |
UTC of position fix |
|
2 |
RMS value of the pseudorange residuals; includes carrier phase residuals during periods of RTK (float) and RTK (fixed) processing |
|
3 |
Error ellipse semi-major axis 1-sigma error, in meters |
|
4 |
Error ellipse semi-minor axis 1-sigma error, in meters |
|
5 |
Error ellipse orientation, degrees from true north |
|
6 |
Latitude 1-sigma error, in meters |
|
7 |
Longitude 1-sigma error, in meters |
|
8 |
Height 1-sigma error, in meters |
|
9 |
The checksum data, always begins with * |
