Unmanned aerial vehicle landing platform, identification method, landing method and flight operation system

Abstract

The invention discloses an unmanned aerial vehicle landing platform, an identification method, a landing method and a flight operation system. A multi-size nested pattern is arranged on the landing platform, after the unmanned aerial vehicle arrives at a landing point, a main pattern is automatically identified firstly, and a first secondary pattern is automatically identified along with shortening of the distance. A second secondary pattern around the primary pattern is automatically identified when the position is shifted due to airflow disturbance. Therefore, the unmanned aerial vehicle can be guided by the mark image in the whole landing process, and precise landing is achieved. Segmented design is carried out in the landing process, the landing process comprises the three stages of initial acceleration, constant-speed flight and tail-end deceleration, and when the speed is reduced to zero, the unmanned aerial vehicle just lands on the landing platform, and stable landing is achieved. According to the method, the unmanned aerial vehicle can be guided to land to the designated position accurately, stably and efficiently, the pattern target can be recognized in a self-adaptive mode in the landing process, and high robustness and high anti-interference performance are achieved.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle landing platform, a landing platform identification method, an unmanned aerial vehicle method and a flight operation system. Background technique [0002] With the gradual expansion of the application range of UAV technology in the military and civilian fields, UAVs with precise landing functions have attracted more and more attention, such as precise landing, landing, and fixed-point delivery. Traditional guidance technologies include inertial guidance, radar guidance, and high-precision satellite guidance. The position error of inertial navigation will accumulate and increase over time, affecting navigation accuracy; the positioning accuracy of radar is limited, and the equipment is complicated; high-precision satellite guidance relies on satellite signals, which is susceptible to interference, and it is difficult to guarantee reliability in th...

AI Technical Summary

Problems solved by technology

During the landing process of the UAV, due to the change of the distance and position from the landing board, its field of view will change. As the distance gets closer, the target will be lost when it approaches the landing platform, and the final landing position is prone to deviation. Low landing accuracy

On the other hand, airflow disturbance may cause the position of the UAV to deviate from the center of the landing board, and it can only "see" a partial position but cannot get a full picture of the pattern. The usual design is to reposition the position of the pattern after pulling the UAV to a certain position , which increases the landing time

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