A fixed-point positioning method and system for an unmanned aerial vehicle

Abstract

The present invention relates to the field of the unmanned aerial vehicle positioning technology. The invention discloses an unmanned aerial vehicle fixed point positioning method and system, wherein the method comprises a four-step positioning method. Firstly, preliminary positioning is performed by a satellite, and a rough positioning area is obtained. Secondly, fine positioning is performed by using the infrared intensity in the rough positioning region to obtain a fine positioning region. Then, in the fine positioning area, a laser beam enclosing a certain area is used for finer positioning, and a finer positioning area is obtained. Finally, in the finer positioning area, point laser is detected to get the final positioning. The positioning accuracy is very high, the algorithm is simple, the computation is small, the positioning speed is fast, the requirement for the hardware performance is low, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of positioning of unmanned aerial vehicles, and in particular relates to a fixed-point positioning method and system for unmanned aerial vehicles. Background technique [0002] UAV is a powered, controllable, capable of carrying a variety of mission equipment, performing a variety of tasks and reusable aircraft. Unmanned aircraft that can be controlled by wireless remote control equipment and its own control devices, such as unmanned helicopters, unmanned fixed-wing aircraft, unmanned paragliders, etc. Widely used in aerial photography, monitoring, investigation and other fields. [0003] For a fully autonomously controlled UAV, it needs to automatically complete take-off and landing, and during the landing process, the most important thing is how to perform precise positioning. Most of the existing UAVs use GPS for positioning, such as the open patent : CN205958757U, but the positioning accuracy of GPS is...

AI Technical Summary

Problems solved by technology

[0003] For a fully autonomously controlled UAV, it needs to automatically complete take-off and landing, and during the landing process, the most important thing is how to perform precise positioning. Most of the existing UAVs use GPS for positioning, such as the open patent : CN205958757U, but the positioning accuracy of GPS is not high enough, and the error can reach several meters. In order to improve the positioning accuracy of drones, some now use infrared for auxiliary positioning, such as the public patent: CN106371463A, and some use icons for auxiliary positioning, although in certain The positioning accuracy has been improved to a certain extent, but the accuracy is still not high enough to meet some occasions that require high precision. For example, when the drone needs to perform wireless charging, it is required that the wireless charging transmitter module and the wireless charging receiving module be accurately aligned to improve charging efficiency. , In addition, in order to improve the positioning accuracy of the existing UAV, the algorithm is complex and the calculation is large

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