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UAV (unmanned aerial vehicle) group mounted polarization array attitude measurement and target detection method

A target detection and UAV technology, applied in the field of navigation and radar detection, can solve the problem of high cost of attitude navigation equipment, achieve high attitude accuracy, avoid occlusion, and improve the effect of utilization

Active Publication Date: 2018-06-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

These requirements make attitude navigation equipment costly

Method used

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  • UAV (unmanned aerial vehicle) group mounted polarization array attitude measurement and target detection method
  • UAV (unmanned aerial vehicle) group mounted polarization array attitude measurement and target detection method

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0027] When UAVs fly in formation to perform missions, they not only need to solve the necessary communication, data fusion, flight control and other technologies during the flight of a single UAV, but also need to solve problems such as formation maintenance, collision avoidance and obstacle avoidance, and track planning. In this paper, it is assumed that the aircraft in the UAV dense cluster can exchange Bluetooth short-distance information with each other without barriers.

[0028] 1. Electromagnetic vector sensor receiving signal model

[0029] The direction of electromagnetic wave signal propagation is as figure 1 As shown, in the geodetic coordinate system, the parameter of the direction of arrival of the electromagnetic wave space Represents azimuth angle and elevation angle respectively, -π / 2≤θ≤π / 2, Then the arrival vector is The pol...

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Abstract

The invention relates to a UAV (unmanned aerial vehicle) group mounted polarization array attitude measurement and target detection method, and the invention reveals the change rule between the attitude position of a multi-loss electromagnetic vector sensor and the receiving of signals, and achieves the attitude measurement of a platform according to the signals of a plurality of earth satellite navigation systems which achieves the cooperative navigation or the spectrum of a UAV base station signal and maximization. A feature value algorithm is employed for calculating a general electromagnetic wave generalized spatial spectrum, and the polarization signal of a blind signal, the position of a plane, and the frequency shift information are obtained. The installation attitude and position information of a sensor in a plane body is maintained, and the method achieves the multi-target DOA under the conditions that the position of a UAV is not accurate and there is the frequency shift problem.

Description

technical field [0001] The invention relates to a method for attitude measurement and target detection of an unmanned aerial vehicle group-carried polarization array, and belongs to the technical field of radar detection and navigation. Background technique [0002] The long-range wide-area phased array early warning radar is a component of the air countermeasure system. It has a large number of array elements, a large carrier aircraft, poor maneuverability, and is easy to be attacked. The overall formation of UAV swarms maintains a certain topology, while a single machine can have certain mobility, strong survivability, and improved mission efficiency. Using UAV swarms to attack targets, the hit rate and lethality have been widely valued. There are less research results on the more important reconnaissance tasks of the man-machine group. Joint attitude measurement and reconnaissance (BeamForming, BF) has always been one of the hot issues in array signal processing, and is ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/53G01S19/40G01S19/45G01C21/00
CPCG01C21/00G01S19/40G01S19/45G01S19/53
Inventor 陈广东黄海行黄雨泽王媛
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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