METHOD OF ACCIDENT-FREE LANDING OF UNMANNED AERIAL VEHICLE Russian patent published in 2020 - IPC B64C25/00 G05D1/00 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to control methods of unmanned aerial vehicles. Method for accident-free landing of an unmanned aerial vehicle, characterized by the fact that a time sequence of frames is obtained on the optical mark from the optical camera, determining UAV displacement angles, obtaining data on angles of inclination and height of UAV, processing the obtained data, determining the displacement vector of the UAV, sending control signals to the flight controller and correcting the trajectory of the UAV landing. Time sequence of frames from the optical camera is obtained with information on at least one fragment of the optical mark, to determine at least two displacement vectors along horizontal taking into account optical camera shifts relative to optical mark, fragment relative to optical mark and dimensions of optical mark or its fragment. Control signals are sent to flight controller to make drone converging with optical mark at loss of optical camera communication with optical mark or its fragment. Control signals are sent to the flight controller to stop the UAV, to perform movement along the reverse trajectory until visual connection of the optical camera with the optical mark or its fragment is restored.

EFFECT: technical result is higher accuracy of accident-free landing of UAV.

4 cl, 1 dwg