We tested RTK vs Single GNSS ublox ZED-FP9 receivers on a moving car at 70km/h and the results are quite impressive, despite the fact that we placed antennas in front of the parbrize of the car and not on the roof. We drove a distance of ~7km. The displacement of 15cm between the two antennas is taken into account in the final results. The RTK was achieved using NTRIP protocol (Networked Transport of RTCM via Internet Protocol) from HxGN SmartNet using VRS from all the available GNSS. Recording was set up at 1Hz using smartphones and NTRIP Client for Android application.
ZED-F9P GNSS features
Concurrent GNSS of ZED-FP9: BeiDou, Galileo, GLONASS, GPS / QZSS
GNSS Bands: L2OF, L2C, E1B/C, B2I, E5b, L1C/A, L1OF, B1I
Results of Testing
RSM error of 3D points at the same GNSS time:
Xerror = 0.323m Yerror = 0.367m Zerror = 1.313m
RMS error of distances between 3D points:
SD = 0.039m
topometrics.gr 