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China - Hong Kong

Rover Setup​

Coordinate System​

Choose a coordinate system based on the Hong Kong 1980 datum (such as Hong Kong 1980 / Hong Kong 1980 Grid System).

Vertical Datum​

Choose the HKPD height vertical datum.

The HKGEOID-2016 geoid is used to perform the transformation.

Base Setup​

Your base or NTRIP service should be in ITRF96. The Helmert (7-parameters) is used to perform the datum conversion.

When setting up a base station on a benchmark, enter ITRF96 geographic coordinates (lat/long) and ellipsoidal height in the Emlid Flow Base settings.