Grs: Satellite Range Residuals - ashtech DG16 Reference Manual

Table 8.11 outlines the message format.
Parameter
m1 UTC (hhmmss.ss)
m2 Latitude (ddmm.mmmmmm
c3 Latitude sector
m4 Longitude (dddmm.mmmmmm)
c5 Longitude sector
d6 Positioning system mode indicator (one character for GPS,
one character for GLONASS)
• A—Autonomous mode
• D—Differential mode
• P—Precise. No SA and P-code
• R—Fixed RTK (N/A)
• F—Float RTK (N/A)
• N—No fix
d7 Total number of satellites used in the computation
d8 HDOP
f9 Geoidal height (altitude above MSL) in meters
f10 Geoidal separation in meters
f11 Age of differential corrections
d12 Base station ID
*cc Checksum

GRS: Satellite Range Residuals

$PASHS,NME,GRS,x,s,[f]
Enable or disable NMEA satellite range residual response message to port x, where
x is the output port, and s is ON or OFF, and f is the optional message output rate
ranging from 0.05 to 999 seconds depending on the measurement update rate
option installed.
The receiver does not output this message if a position is not computed.
NMEA Commands
Table 8.11. $GPGNS Message Format
Description Range
0 to 235959.99
0 to 9000.000000
N—North
S—South
0 to 18000.000000
E—East
W—West
NN, AA, DD, RR, FF, PP
0 to 99
0.0 to 9.9
-1000.0 to 18000.0
-99.9 to 99.9
0 to 999
0 to 1023
2-character hex
239