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Oxford Technical Solutions
Changing the differential correction format
There are a number of different standards for the differential corrections which will
improve the position accuracy of moving GNSS receivers. The RT-Base S supports
several differential correction formats.
Please note:
By default, the RT-Base S uses the RTCMv3 standard for transmitting its
differential corrections. You do not need to change the differential correction format
unless you have a GLONASS-capable equipment and a GLONASS base station.
What the RT-Base S transmits in each mode
Messages output with RTCA:
RTCAOBS (L1/L2 pseudo-range and carrier-phase). Frequency 1 Hz.
RTCAREF (base station position). Frequency 0.1 Hz.
RTCA1 (pseudo-range corrections) Frequency 1 Hz.
Messages output with RTCA2:
RTCAOBS2 (L1/L2 GNSS+GLONASS pseudo-range and carrier-phase).
Frequency 1 Hz.
RTCAREF (base station position). Frequency 0.1 Hz.
RTCA1 (pseudo-range corrections). Frequency 1 Hz.
Messages output with RTCM:
RTCM3 (extended L1/L2 GNSS pseudo-range and carrier-phase). Frequency
0.1 Hz.
RTCM22. Frequency (extended L1/L2 GLONASS pseudo-range and carrier-
phase) 0.1 Hz.
RTCM1. Frequency (base station antenna position). Frequency 0.5 Hz.
RTCM31 (extended antenna descriptor and set-up information). Frequency
0.5 Hz.
Messages output with RTCMv3:
RTCM1004 (extended L1/L2 GNSS pseudo-range and carrier-phase).
Frequency 1 Hz.