GCPs and coordinate systems

Community Community & Industry Discussion
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1

Hi All

I’ve just started with Rc and want to use it for survey purposes. I have used Pix4D etc in the past. The issue I’m having with RC is the coordinate systems. What settings do I use. The UAV data is GPS (WGS84 and the GCPs are MGA2020 with AHD heights.

TIA

Arthur

2

Hi @ArthurMoehrke,
this depends in which coordinate system you want to work.
I wasn’t able to find the MGA2020 with AHD heights system. Do you know the EPSG code for that system?
You can set the wanted coordinate system in the application settings and also during importing the GCPs.
In RealityCapture there you can set these systems with AHD:
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3

I have done some initial testing with this epsg and found that it produces higher inaccuracies from our own conversions from AHD to geoidal. Perhaps the preset AHD height may not be updated. i may need to test further.