Hello,

We have faced the following issue :
* Fly with M300 + L2 + RTK via NTRIP provider - RTCM3.2
* DJI Terra 4.2.2 > select output coordinate as EPSG 31370 + Ostend Height
* Model generated, when checking with measurement on site ( in Ostend Height ) : ground is 43m higher in generated model.

When modifiyng elevation to EGM2008, it gets to 2m from on site measurement. Any idea where it could be wrong?

Regards,

AR

Like many other geoids, it is selectable, but it does nothing. As if there is no raster associated with it. Try creating your own .prj to add it. I have never succeeded, nor received any positive response from DJI.

LV_Forestry Posted at 8-8 00:42
Like many other geoids, it is selectable, but it does nothing. As if there is no raster associated with it. Try creating your own .prj to add it. I have never succeeded, nor received any positive response from DJI.

Thanks for feedback!
Is this a good "source"? As mentioned in L2 doc : https://cdn.proj.org/

AR_AirPrecision Posted at 8-8 00:46
Thanks for feedback!
Is this a good "source"? As mentioned in L2 doc : https://cdn.proj.org/

Ps: not really a source for PRJ file, only Tif...so EPSG.io

LV_Forestry Posted at 8-8 00:42
Like many other geoids, it is selectable, but it does nothing. As if there is no raster associated with it. Try creating your own .prj to add it. I have never succeeded, nor received any positive response from DJI.

You were not able to use a custom PRJ? Or to use the "DJI Terra" one? I defined a custom one but...same results as earlier :-(

AR_AirPrecision Posted at 8-8 01:17
You were not able to use a custom PRJ? Or to use the "DJI Terra" one? I defined a custom one but...same results as earlier :-(

I tried many things. Zero success.

LV_Forestry Posted at 8-8 02:00
I tried many things. Zero success.

Dang...how do you do it? I mostly align to GCPs...

AR_AirPrecision Posted at 8-8 02:16
Dang...how do you do it? I mostly align to GCPs...

I let terra making his process in WGS. Then with global mapper i correct according to the geoid.