Getting a No Overlap Error Between my .23O file and GCPs in Applanix PosPac & YellowScan CloudStation

[kirill.pavlyuchuk]

Hi Eric,

@dronemapper23

They say there is a large discrepancy in the Z value showing a significant difference in altitude between what the drone recorded and what the Reach RS2+ recorded.

It seems to be pretty apparent because the base is located on the ground while the drone flies.

I’ve decided to check the Z-accuracy of the base log and downloaded the log from the nearest CORS station located in Reno. The red cross shows the base position:

I’ve used the Static processing in Emlid Studio with the All solutions setting. This allows you to get the ground track of the base.

The resulting position log is shown below:

The U-D (m) represents the changing of the elevation of the processed log. As you can see, the elevation fluctuates in the range that doesn’t exceed 2 mm.

So I’m not sure what they meant about the discrepancy in the Z value.

@dronemapper23

In the future I will always set up my base and log data while I am recording my GCPs with my rover. But if I collect my GCPs on a different day or time from my drone flight I will end up with two different .23O files, one for my drone flight and one for when I record the locations of the GCPs. I hope this will not create a problem?

I don’t think this is the root cause at all. The error shown in the screenshot made me think that there was something related to the CSV file. It’s probably just not the real cause.