The present invention relates to an unmanned aerial vehicle parachute landing
recovery method based on the accurate measurement of a
wind field, and applied to the parachute landing fixed point
recovery of medium-and-small sized unmanned aerial vehicles. The method comprises: prior to the landing of the unmanned aerial vehicle, an airborne sensor is employed to measure the track
ground speed, the air flow air speed, the track
slant angle, the
yaw angle, the sideslip angle and the track
azimuth of the unmanned aerial vehicle in real time; the size and the direction of the
wind speed are calculated; the
recovery motion points of the unmanned aerial vehicle are calculated according to the
wind field information, and the flight course of the unmanned aerial vehicle is regulated; and after the unmanned aerial vehicle enters a recovery course by facing the wind to arrive an expected recovery point, the unmanned aerial vehicle emits a stop instruction, makes
unpowered flight, emits a recovery instruction and opens a parachute in order, and the unmanned aerial vehicle slides slowing down and drifts close to an assigned point of fall. The unmanned aerial vehicle parachute landing
recovery method based on the accurate measurement of the
wind field is able to effectively improve the precision and the reliability of the parachute
landing point recovery of the unmanned aerial vehicle on the basis of the measurement of the wind field.