Trimble Outdoors aggps 332 Benutzerhandbuch
C NMEA-0183 Messages
8 6 AgGPS 332 GPS Receiver User Guide
C.6
GRS (GPS Range Residuals)
The
GRS
message is used to support the Receiver Autonomous
Integrity Monitoring (
RAIM
).
The
GRS
message structure is:
$GPGRS,220320.0,0,-0.8,-0.2,-0.1,
-0.2,0.8,0.6,,,,,,,*55
-0.2,0.8,0.6,,,,,,,*55
Table C.6 describes these fields.
Note –
Because the contents of this NMEA message do not change
significantly during a one-second interval, the receiver outputs this
message at a maximum rate of 1 Hz.
message at a maximum rate of 1 Hz.
Table C.6
GRS message fields
Field
Description
1
UTC time of GGA position fix
2
Residuals
Residuals used to calculate position given in the matching
GGA line
GGA line
1:
Residuals recomputed after the GGA position was computed
3-14
Range residuals for satellites used in the navigation solution, in
meters
meters