ashtech GG Surveyor Reference Manual page 170

Table 6.63: $GPMSG Response for RTCM Messages 1, 31, and 9, 34 (continued)
The format for RTCM message type 3 and 32 is:
$GPMSG,d1,d2,f1,d3,d4,d5,m1,f1,f2,f3,*cc
Format and contents of message types 3 and 32 are identical except for the fact that message type 32
displays the base coordinates in the PZ-90 coordinate system, while message type 3 uses the WGS-84
coordinate system.
GPS Reference Station Parameters (Type 3) and GLONASS Reference Station
Parameters (Type 32):
Table 6.64 outlines the $GPMSG structure.
152
Item
+0003.56 PRC for SV 02
+0.040 RRC for SV 02
120 IODE for SV 02
2 UDRE for SV 02
27 Satellite PRN number
+0047.42 PRC for SV 27
-0.005 RRC for SV 27
145 IODE for SV 27
7A Message checksum in hexadecimal
Table 6.64: $GPMSG Structure for RTCM Message Types 3 and 32
Field
d1 RTCM type, 03 or 32
d2 Station identifier, 0000 to 1023
f1 Z count in seconds and tenths, 0000.0 to 3600.0
d3 Sequence number, 0 to 7
d4 Station health, 0 to 7
d5 Total number of characters after the time item, 000 to
999
m1 current GPS system time of position computation in
hours, minutes and seconds
Description
Description
GG Surveyor GPS+GLONASS Reference Manual