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Target location method of unmanned plane

A target positioning and UAV technology, applied in the field of UAV target positioning, can solve the problems of low positioning accuracy and poor positioning accuracy, and achieve the effect of less error sources, simple algorithm and high positioning accuracy

Inactive Publication Date: 2012-10-03
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The target positioning method based on the principle of collinear conformation is suitable for areas with flat terrain, and the positioning accuracy is poor under complex terrain conditions; the target positioning method based on DEM, when there are many isolated points in the terrain, the positioning accuracy is relatively low

Method used

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  • Target location method of unmanned plane
  • Target location method of unmanned plane
  • Target location method of unmanned plane

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Embodiment Construction

[0024] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0025] The invention provides a target positioning method for unmanned aerial vehicle, combined with the attached figure 1 ,Specific steps are as follows:

[0026] The first step is to select the target M(x,y,z) T , the unmanned aerial vehicle (later referred to as the aircraft) flies above the target M.

[0027] In the second step, the aircraft collects n positions P of itself during the flight 1 (x 1 ,y 1 ,z 1 ) T ,P 2 (x 2 ,y 2 ,z 2 ) T 、…P n (x n ,y n ,z n ) T , n≥3. The coordinates of the n positions are obtained by the aircraft's navigation system.

[0028] like figure 1 As shown, the aircraft route cannot be a straight line, and at least three of the n aircraft positions should not be on the same straight line. The optimal flight path for the aircraft is to circle over the target.

[0029] The third step is to obtain the po...

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Abstract

The invention provides a target location method of an unmanned plane, which belongs to the technical field of target location. The target location method comprises the steps of: firstly determining the target position, obtaining the coordinates of n positions of a plane by a navigation system of the plane, obtaining the distance between the n positions of the plane and the target M by laser ranging, writing n equations with the target coordinates as unknown quantities, carrying out linearization on the equation set formed by the n equations and solving the equation set by adopting the least square method to obtain the coordinates of the target M. The target location method provided by the invention is suitable for any orographic conditions; the sources of error are few, and only comprise aircraft position error and laser ranging error, so that higher locating precision can be obtained; and furthermore, the algorithm is simple and the method is easy to realize.

Description

technical field [0001] The invention provides a target positioning method for an unmanned aerial vehicle, which belongs to the technical field of target positioning. Background technique [0002] In modern warfare, missile weapons have become an important factor that influences the situation on the battlefield and determines the course of the war. A large number of missile weapons have expanded the combat space, enhanced the destructive power of war, accelerated the process of war, and made war in many cases a contest of high-tech weapons such as missiles. At present, the range of missiles is getting farther and farther. After solving the problem of "flying", the problem of "seeing" must also be solved in order to achieve the goal of "hitting". UAV target positioning technology can effectively obtain long-distance target information and provide target indication for missiles to attack beyond visual range. [0003] At present, there are three main methods for target positio...

Claims

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Application Information

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IPC IPC(8): G05D1/12
Inventor 王养柱杨松普
Owner BEIHANG UNIV
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