Trimble Outdoors r7 Manuale Utente

Trimble R7/R8 GPS Receiver User Guide     1 7 7

NMEA-0183 Output     A

An example of the GST message string is shown below. Table A.5 
describes the message fields.

$GPGST,172814.0,0.006,0.023,0.020,273.6,
0.023,0.020,0.031*6A

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