I installed and set the parameters according to the manual, and used a six-rotor UAV to test. The firmware version 4.3, obstacle avoidance function is also normal. The test uses automatic mode to fly, but the obstacle avoidance will be triggered when there is no obstacle. It is always near a certain point (an obstacle was set at this point before, and now it is removed), even if I increase the height, it will also be triggered, Does the autopilot record the GPS point when the obstacle avoidance is triggered, and the UAV will think there is an obstacle as long as it flies near this point in the future?
No, that is not the case. There is not enough memory to do that.
Unless you’re using SLAM on a companion computer.