UAV (unmanned aerial vehicle) assisted landing visual guiding method and airborne system based on ground cooperative mark

The invention discloses a UAV (unmanned aerial vehicle) assisted landing visual guiding method and airborne system based on a ground cooperative mark and belongs to the field of flight navigation control. At least four round luminophors are arranged into the directional ground cooperative mark, and a reserved landing position is set in front of a peak lamp. A UAV hovers at a preset height, each highlight area in each frame of image of an airborne camera is detected, whether the highlight area is one round luminophor or not is judged, then characteristics are compared with ground cooperative mark characteristics stored in a target base in advance and recognized according to the number of the round luminophors and the arrangement relation among the round luminophors, the position of the peak lamp and the preset landing position are acquired, and the UAV is controlled to descend and fly towards the preset landing position and performs target prediction and tracking simultaneously. The ground cooperative mark has less arrangement constraint and high flexibility, various marks are supported for guidance of different landing positions, the UAV assisted landing guidance efficiency and reliability are effectively improved, and GPS (global positioning system) limitation is avoided.