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France

Rover Setup​

Coordinate System​

Choose a coordinate system based on the RGF93 datum (such as RGF93 / CC42).

Vertical Datum​

Choose one of the available vertical datums:

  • NGF-IGN69(RAF09) height
  • NGF-IGN69(RAF18) height
  • NGF-IGN69(RAF18B) height
  • NGF-IGN69(RAF20) height
  • NGF-IGN78(RAC09) height
  • NGF-IGN69(RAC23) height

The following geoids are used to perform the transformation:

  • RAF09
  • RAF18
  • RAF18B
  • RAF20
  • RAC09
  • RAC23

Base Setup​

Your base or NTRIP service should be in RGF93.

When setting up a base station on a benchmark, enter RGF93 geographic coordinates (lat/long) and ellipsoidal height in the Emlid Flow Base settings.