NavCom Sapphire Rev.J - Manual (Page 348)

Sapphire Technical Reference Manual Rev. J
348
Table 180: dGPS Source Type
Number dGPS Source Type (WAAS, RTCM Code, StarFire single)
0 WAAS
1 WAAS Test mode
2 StarFire GPS
3 RTCM1
4 RTCM9
5 EGNOS
6 MSAS
7 GAGAN
8 StarFire GNSS
9-15 Reserved
Table 181: RTK Source Type
Number RTK Source Type
0 Proprietary 5B
1 Proprietary 5E
2 RTCM18/19
3 RTCM20/21
4 CMR
5 CMR+
6 RTCM3-L1 Compact
7 RTCM3-L1 Full
8 RTCM3-Dual Compact
9 RTCM3-Dual Full
10 RTCM3.1
11-15 Reserved
2.91.8 Maximum dGPS Correction Age
The GPS engine calculates an age for the corrections for each satellite used in each
differential mode used in the navigation solution, for example, SBAS (WAAS/EGNOS),
StarFire WAdGPS (RTG) and local base station modes (RTCM code based and RTK).
The correction age is computed for a satellite by subtracting the GPS reference time of
the last correction received from the current GPS reference time. This value is the
largest correction age value among the satellites used in the navigation solution.
2.91.9 dGPS Base Station ID
The dGPS base station ID is the value reported by the local base station in the received
correction messages. It is not meaningful for SBAS, StarFire, or non-differential modes
of operation.