Passive non-cooperative target positioning method based on distributed irradiation source

A non-cooperative target, passive positioning technology, applied in the field of radar detection

Inactive Publication Date: 2011-11-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention applies the multi-point positioning technology of the global positioning system to the field of non-cooperative target detection, thereby effectively overcoming the constraints of the radar angular resolution, working band and

Method used

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  • Passive non-cooperative target positioning method based on distributed irradiation source
  • Passive non-cooperative target positioning method based on distributed irradiation source
  • Passive non-cooperative target positioning method based on distributed irradiation source

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Embodiment Construction

[0086] The present invention has verified the correctness of the determined method of the present invention by computer emulation, and emulation platform is matlab 2008, and concrete implementation steps are as follows:

[0087] Step 1. Initialize system parameters

[0088] In order to simulate the non-cooperative target passive positioning method of distributed illumination sources, it is assumed that the main system parameters are as follows: the positioning accuracy of the passive positioning system of distributed illumination sources ρ = 30m; the working band f of the passive positioning system of distributed illumination sources c =1GHz; the duration of the transmitted signal T pul =4μs; the number of distributed radiation sources K=5, the pulse repetition period of the passive positioning system of distributed radiation sources, denoted as PRT=0.01s.

[0089] Step 2. Determine the spatial location of the distributed illumination source

[0090] The distributed radiatio...

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Abstract

The invention provides a passive non-cooperative target positioning method based on a distributed irradiation source. In the method, a non-cooperative target is detected through a plurality of irradiation sources distributed in space, and a multi-point ranging positioning technology is utilized at a receiving end so as to acquire three-dimensional position information of the non-cooperative target. At the receiving end, a system works in a passive mode and has higher stealth performance and higher target positioning accuracy. The defect that positioning accuracy of the traditional passive positioning technology is limited by operating wavebands and the size of receiving antennas is overcome, a high-precision three-dimensional position of the non-cooperative target can be acquired even in a lower operating waveband, and the detection and the tracking of a stealth target is facilitated. In addition, by the method, a three-dimensional speed of the target can be extracted from the three-dimensional position information of the non-cooperative target; and compared with the traditional radar which can only acquire the radial speed of the non-cooperative target, the method contributes to target identification. Finally, a receiving end system has a simple structure, a passive detection function can be realized by additionally arranging a signal processing module on the basis of the conventional radar system, and the system has lower cost and is convenient to upgrade and reform on a large scale.

Description

technical field [0001] The invention belongs to the technical field of radar detection, and in particular relates to passive radar positioning technology. Background technique [0002] Passive radar positioning refers to the radar detection technology that uses the target to reflect or radiate electromagnetic waves to achieve target detection and obtain target position, speed and other information under the condition of not emitting electromagnetic waves. Compared with active detection technology, passive detection technology has stronger concealment, anti-interference and battlefield survivability, and has broad application prospects in military reconnaissance, surveillance and other fields. [0003] According to the inventor's understanding and published literature, for example: ① http: / / www.lockheed-martin.com / products / silent-sentry / index.html; ② Kuschel, H.; O'Hagan, D.; Passiveradar from history to future, the 11th International Radar Symposium(IRS), 2010, Page(s): 1~4...

Claims

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Application Information

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IPC IPC(8): G01S5/02G01S13/06
Inventor 师君张晓玲杨建宇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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