Unmanned helicopter automatic landing method based on laser guidance

Abstract

The invention relates to an unmanned helicopter automatic landing method based on laser guidance, belonging to the field of unmanned plane flight control. The method is characterized in that a laser transmitter, an airborne laser acquisition device and a flight control system are provided, wherein the laser transmitter is used for landing instructions, the air-borne laser acquisition device is used for acquiring laser spots projected to the ground by the laser transmitter, the flight control system is used for controlling helicopter tracing laser spots according to output signals of the laser acquisition device, so that the unmanned helicopter can gradually approach to the laser spots on the ground according to the instructions and guidance of the laser transmitter and descend to lower height at the same time until automatic landing is completed. According to the method, instructive accuracy of laser can be employed to accurately and conveniently guide the unmanned helicopter to automatically land.

Description

technical field [0001] The invention is a method for instructing and guiding the automatic landing of the unmanned helicopter, which can accurately and conveniently guide the unmanned helicopter to complete fixed-point landing. Mainly used in unmanned helicopters, aerospace, robotics and other technical fields. Background technique [0002] There are usually two methods for fixed-point landing of unmanned helicopters. [0003] One is to realize fixed-point landing under the instructions of the GPS (Global Positioning System) global positioning system. Using GPS to guide the helicopter to land is the most common method at present. However, due to the poor penetration of GPS signals, it is extremely vulnerable to the influence of ground buildings and bushes and fails. In addition, GPS is controlled by the US military and will fail under special circumstances. Therefore, there are disadvantages and hidden dangers in using GPS to guide the helicopter to land. [0004] The s...

AI Technical Summary

Problems solved by technology

In addition, since the signal cloth is usually laid before the landing of the helicopter, it cannot be moved during the landing of the helicopter

Therefore, it is impossible to change the landing position of the unmanned helicopter in real time according to the actual flight situation

Therefore, both of the above two methods have a certain degree of insufficiency.

Images