I flew a 300 hectare area over 2 days with my DJI Matrice 200 using a DJI 4XS camera. I flew it in 2 days at 105m AGL with 85/80 overlap. It took 21 seperate flights/battery changes.
On day one, all went well until, for some reason, one flight suddenly began flying at double the speed. The remaining flights that day went back to the programmed speed. Needless to say, those images did not align properly.
Due to weather, I did not fly the remainder of the area until a week later. All flights seemed to go well.
When I processed the data, the images taken at double the air speed did not align. So, to fill in that area, I went back a 3rd day for a re-flight of only that small area. When I tried to align the photos with the rest of the area, they were well over 100 m lower in elevation than the rest of the images.
Topic: Elevation different by over 100m on different days (Read 1355 times)
