I use the Phatom 4 for topographic surveys for several months.
My last flight I did was return an area with elevation values TOTALLY wrong (climbs instead of downhill...)
The strange thing is that this only happened in a little land area I've mapped.
This is something I can not explain.
The drone flew to 60m, with 80% overlap, and the day was a little windy. I would add that the surface was almost flat and of uniform white color.
What happened ?
My last flight I did was return an area with elevation values TOTALLY wrong (climbs instead of downhill...)
The strange thing is that this only happened in a little land area I've mapped.
This is something I can not explain.
The drone flew to 60m, with 80% overlap, and the day was a little windy. I would add that the surface was almost flat and of uniform white color.
What happened ?