ZED-F9K-Integration manual
Constellation key
CFG-SIGNAL-GPS_ENA
Band key
CFG-SIGNAL-GPS_L1CA_ENA
Band key
CFG-SIGNAL-GPS_L2C_ENA
Constellation
enabled?
true (1) true (1) false (0)
yes
2
true (1) true (1) true (1) yes
Table 3: Example of possible values of configuration items for the GPS constellation
The GPS constellation can be disabled if the SBAS and QZSS system are also disabled at
the same time.
3.1.5 RTCM corrections
RTCM is a binary data protocol for communication of GNSS correction information. The ZED-F9K
high precision receiver supports RTCM as specified by RTCM 10403.3, Differential GNSS (Global
Navigation Satellite Systems) Services – Version 3 (October 7, 2016).
The RTCM specification is currently at version 3.3 and RTCM version 2 messages are not supported
by this standard.
To modify the RTCM input settings, see the configuration section in the u-blox ZED-F9K Interface
description [2].
Users need to be aware of the datum used by the correction source. The receiver position will
provide coordinates in the correction source reference frame. This may need to be taken into account
when using the RTK-derived position. See the Reference frames section in the Appendix for more
information.
3.1.5.1 List of supported RTCM input messages
Message type Description
RTCM 1001 L1-only GPS RTK observables
RTCM 1002 Extended L1-only GPS RTK observables
RTCM 1003 L1/L2 GPS RTK observables
RTCM 1004 Extended L1/L2 GPS RTK observables
RTCM 1005 Stationary RTK reference station ARP
RTCM 1006 Stationary RTK reference station ARP with antenna height
RTCM 1007 Antenna descriptor
RTCM 1009 L1-only GLONASS RTK observables
RTCM 1010 Extended L1-only GLONASS RTK observables
RTCM 1011 L1/L2 GLONASS RTK observables
RTCM 1012 Extended L1/L2 GLONASS RTK observables
RTCM 1033 Receiver and Antenna Description
RTCM 1074 GPS MSM4
RTCM 1075 GPS MSM5
RTCM 1077 GPS MSM7
RTCM 1084 GLONASS MSM4
RTCM 1085 GLONASS MSM5
RTCM 1087 GLONASS MSM7
RTCM 1094 Galileo MSM4
RTCM 1095 Galileo MSM5
2
The combination works only when GPS L2, GAL E5B, BDS B2, QZSS L2C, and GLO L2 are disabled at the same time.
UBX-20046189 - R01
3 Receiver functionality Page 12 of 105
C1-Public Early production information