Hi.
First of all, please understand that I am not good at English.
I am currently using M210 V2 RTK with D-RTK base station.
I wonder what the coordinate reference uses when systems on the RTK mode.
The coordinates that I can see through the controller come out into the 'LAT/LON' coordinate system.
As a result of the search, it was confirmed that both coordinate and altitude reference used WGS84 in the Phantom 4 RTK.
However, regarding M210 V2 RTK and D-RTK, I have not found any result.
Does M210 and D-RTK also use WGS84 as the coordinate(and height) reference?
I'll be waiting for the reply. Thank you.

For what i know, the Matrice 300 system use WGS84 (EPSG 4326), with ellipsoidical height.
So probably your system can be the same.