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Passive radar target positioning method and device

A passive radar, target positioning technology, applied in measurement devices, radio wave measurement systems, reflection/re-radiation of radio waves, etc., can solve the problem of low positioning accuracy

Active Publication Date: 2018-11-06
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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Problems solved by technology

[0005] The purpose of the present invention is to provide a passive radar target positioning method and device to solve the problem of low positioning accuracy of passive radar systems in the prior art

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  • Passive radar target positioning method and device
  • Passive radar target positioning method and device

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0057] The present invention provides a passive radar target locating device, which includes a processor, and the processor is used to execute instructions to realize the passive radar target locating method of the present invention. The method is described in detail below.

[0058] Firstly, the time difference observation equation and the frequency difference observation equation of the passive radar system are constructed.

[0059] set target position u = [x y z] T and speed is the parameter to be estimated.

[0060] The positions of N receiving stations are known as s nr =[x nr the y nr z nr ] T (n=1,2,...,N), the speed is

[0061] The exact position of the external radiation source is s t =[x t the y t z t ] T , with a spee...

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Abstract

The invention relates to a passive radar target positioning method and device. The invention is designed under the condition of considering the position error of the external radiation source, and thepositioning result is an optimal estimation result when there is an error of the external radiation source. Target passive positioning combined with time difference and frequency difference is achieved in the case that the target position and the velocity initial value are not required; at the same time, the present invention is in the form of the algebra closed-form solution of the target position and the velocity parameter, so that the computational complexity is low, and there is no convergence problem.

Description

technical field [0001] The invention belongs to the technical field of passive positioning, and in particular relates to a passive radar target positioning method and device. Background technique [0002] Passive radar itself does not radiate source electromagnetic waves, but detects and locates targets by receiving and processing the reflected or scattered signals of targets to existing non-cooperative illumination sources in the environment. Compared with traditional active radar, passive radar system has the advantages of simple structure, low cost, high concealment, no spectrum resource occupation, and anti-electronic interference. Over the years, it has been a research hotspot in the field of international radar. [0003] At present, there are many external radiation sources available, which can be mainly divided into two categories according to their uses: one is civilian radiation source signals, and the other is military radiation source signals. The location of ci...

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Application Information

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IPC IPC(8): G01S13/42
CPCG01S13/42
Inventor 胡德秀赵勇胜赵拥军刘智鑫赵闯刘亚奇陈世文赵泽亚
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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