Near space moving target positioning method based on unmanned aerial vehicle

Abstract

The invention discloses a near space moving target positioning method based on an unmanned aerial vehicle, which belongs to the technical field of unmanned aerial vehicle target positioning. The method comprises the following steps: firstly, an infrared target detector loaded on the unmanned aerial vehicle is used for acquiring a target angle measurement value, in combination of an unmanned aerial vehicle navigation system, the position and the attitude information of the unmanned aerial vehicle are outputted, and the angle value of the connection line between the target and the unmanned aerial vehicle in an earth-rectangular coordinate system is calculated; then, according to the calculated angle value, the least-squares solution of the target in the earth-rectangular coordinate system is solved; and finally, the solved rectangular coordinates are converted to the longitude, the latitude and the height. The method can realize high-precision positioning of the near space target when a laser range finder or a radar can not be used normally, and can be applied to multi-unmanned aerial vehicle formation cooperative positioning.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicle target positioning, in particular to a method for positioning a moving target in near space based on an unmanned aerial vehicle. Background technique [0002] At present, there are mainly three types of detection systems for hypersonic moving targets in near space: ground-based detection systems, space-based detection systems, and space-based detection systems. few. [0003] The ground-based detection system is easily affected by the curvature of the earth, and there are blind spots. When the target flies in the thin atmosphere of the adjacent space, the surface of the body will rub against the air violently to generate plasma, which will refract and absorb electromagnetic wave signals. The long distance and the stealth design of the fuselage, etc., lead to a small reflection area of ​​the radar, which is difficult to detect. [0004] The target detection of the space-based detec...

AI Technical Summary

Problems solved by technology

The traditional single station positioning model needs to know the distance value of the target relative to the UAV, but in the actual combat background, the electromagnetic environment is complex, and the laser range finder often cannot be used normally. At this time, a safer and more effective positioning solution is needed

Considering the infrared characteristics of the moving target in the near space and the detection characteristics of the airborne infrared sensor (only the angle information of the target can be detected), a single infrared detector can only obtain a straight line in space containing the target point, and cannot accurately locate

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