Method and device for positioning unmanned aerial vehicle

Abstract

The invention discloses a method and a device for positioning an unmanned aerial vehicle. The method comprises the following steps: generating a reference image during a flying process of the unmanned aerial vehicle; acquiring a current image which is acquired at current time; determining a current position of the unmanned aerial vehicle according to the reference image and the current image. Certain relevance exists between the reference image and the current image, and then, the current position of the unmanned aerial vehicle can be determined according to the reference image and the current image. Compared with the fixed resolution in the prior art, dynamic matching can be realized better during a course reversal process of the unmanned aerial vehicle, and the system error is reduced, so that the positioning precision of course reversal is improved.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicle control, in particular to a method and device for positioning an unmanned aerial vehicle. Background technique [0002] UAVs are widely used in disaster prevention and rescue, scientific investigation and other fields, and the flight control system is an important part of UAVs, which plays an important role in the intelligentization and practicalization of UAVs. Usually, the UAV can automatically return to the original route after completing the operation to the destination under the control of the flight control system. [0003] In order to realize the positioning of the unmanned aerial vehicle when it returns automatically, in the prior art, the map data provided by a third party can usually be stored in the flight system of the unmanned aerial vehicle, and then through a positioning device such as a global positioning system (Global Position System, GPS) to Realize the positioning and na...

AI Technical Summary

Problems solved by technology

However, the resolution of the map data provided by the third party is related to the height of the drone from the ground. Generally speaking, the higher the drone’s flight altitude, the lower the resolution.

Since the flying height of the UAV will often change during the operation, it is easy to cause a large difference in the resolution of the ground target, and the matching accuracy is low, resulting in poor positioning accuracy when returning.

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