When flying a basic mission with constant altitude waypoints, the drone’s altitude erroneously fluctuates several meters. When at a waypoint, the drone climbs to the correct altitude–but while it travels to the next waypoint, it slowly loses altitude. Here’s a snippet from the flight log:
These results have repeated on Pixhawk 1, Pixhawk Cube, PX4 v1.8.2, and PX4 v1.9.2, and different GPSs. The problem doesn’t exist when flying in other auto altitude-controlled modes, and the drone is not under-powered.
Mission:
- Mission Start - 0m
- Takeoff - 8m rel to home
- Waypoint - 8m rel to home, 5sec hold
- Waypoint - 8m rel to home, 5sec hold
- Waypoint - 8m rel to home
- Waypoint - 8m rel to home
- Waypoint - 8m rel to home
- Waypoint - 8m rel to home
Video of Flight
Log File Analysis (Flight Review)
Any input is appreciated. Thanks a lot!