A UAV swarm-borne polarized array attitude measurement and target detection method

A target detection and unmanned aerial vehicle technology, applied in the fields of navigation and radar detection, can solve the problem of high cost of navigation and attitude navigation equipment, and achieve the effect of improving survivability, high attitude accuracy and improving utilization rate

Active Publication Date: 2022-05-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

These requirements make attitude navigation equipment costly

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  • A UAV swarm-borne polarized array attitude measurement and target detection method
  • A UAV swarm-borne polarized array attitude measurement and target detection method
  • A UAV swarm-borne polarized array attitude measurement and target detection method

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[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 method for attitude measurement and target detection of a UAV group-borne polarization array. The invention discloses the change law between the attitude position of a multi-deficient electromagnetic vector sensor and the received signal, and according to the multiple earth satellite navigation system signals of cooperative navigation Or maximize the spatial spectrum of UAV base station signals to achieve platform attitude measurement. The calculation of generalized electromagnetic wave generalized space spectrum adopts eigenvalue algorithm, blind signal polarization state, aircraft position and frequency drift information, and retains the attitude and position information of sensors installed in the fuselage. Under the condition of inaccurate position and frequency drift of UAV Realize multi-target direction of arrival estimation.

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 Patents(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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