Processing DJI P4RTK images captured without RTK corrections

[SEANJEFFERYS]

Hi Site Scan Team,

We have a site that uses a DJI P4RTK drone with an RTK correction service. Recently, their RTK correction lapsed but they continued to fly with the P4RTK with no RTK correction but using traditional GCP's. The images were processed in Site Scan as normal but the residuals for the GCP's are far greater than usual (up to 0.5m DZ). When comparing this processed P4RTK surface to an older flight captured with an old eBee and processed with the same GCP's, we see distortions in the elevations across the area of up to 1m. We think that the problem lies with the processing settings.

In this case, should we be changing the 'Geolocation Accuracy' settings for X,Y & Z? before processing? What do you suggest is the optimum setting - XY=5m & Z-10m? 

Thanks for your help.

[Pål_Herman_Sund]

I had a similar supportcase @Sean and proposed that solution, but meanwhile client did a reflight and we never got to test. Did you try your proposed solution?

best
Pål (Paul)