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Three-dimensional target scattering coefficient measurement method based on MIMO array technology

A target scattering coefficient, multi-input and multi-output technology, which is used in measurement devices, radio wave measurement systems, and radio wave reflection/re-radiation, etc., can solve the problem of not seeing the target scattering coefficient measurement field

Active Publication Date: 2009-08-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

According to the inventors' knowledge and published literature, for example, M.Weiβ, Ender, J.H.G. "A 3D imaging radar for small unmanned aircraft-ARTINO" EURAD 2005 Conference Proceedings-2nd European RadarConference, 2005, p229-232, it has been proposed that This technology is used in the field of earth observation, but there is no report on its application in the field of target scattering coefficient measurement

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  • Three-dimensional target scattering coefficient measurement method based on MIMO array technology
  • Three-dimensional target scattering coefficient measurement method based on MIMO array technology
  • Three-dimensional target scattering coefficient measurement method based on MIMO array technology

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Embodiment Construction

[0066] The present invention verifies the correctness test of the method of the present invention through simulation test. The specific implementation steps are as follows:

[0067] Step 1. Initialize measurement parameters

[0068] In order to measure the target scattering coefficient, the measurement system first provides the following initialization parameters, including: horizontal resolution index ρ of the target scattering coefficient to be measured H = 1.5 meters; measurement band f c =10G Hz; vertical resolution index ρ of the scattering coefficient of the target to be measured V = 1.5 meters; the signal form of the scattering coefficient of the target to be measured, for example, pulse signal, chirp signal, etc.; the line-of-sight resolution index ρ of the scattering coefficient of the target to be measured r =1.25 meters, transmit signal bandwidth B=80M Hz; the quantization bit number α=4bit of the digital-to-analog conversion module; the duration T of the receive...

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Abstract

The invention provides a method for measuring the scattering coefficient of a three-dimensional target, which is based on the multiple-input and multiple-output array technology, and the method synthesizes a large two-dimensional antenna array by controlling the antenna of the multiple-input and multiple-output array to accurately move on a one-dimensional platform, and then obtaining three-dimensional high resolution distribution of the scattering coefficient of the target by being combined with the pulse compressing technology in signal processing, thus realizing three-dimensional high resolution measurement to the scattering coefficient of the target. The method overcomes the defects of large calculation amount, approximate error, difficult application and complicated target and broadband signal of the method for calculating the scattering coefficient of the target on the basis of computational electromagnetics and the defects of low resolution and being incapable of measuring large targets in the method for measuring the scattering coefficient of the target in a microwave dark room. The method is applicable to the fields of target scattering property research, stealth material / aircraft design, and the like.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to the technical field of target scattering coefficient measurement. Background technique [0002] Acquisition of target scattering coefficient is one of the important research directions in the field of electromagnetic field research. The feature extraction of high-resolution target scattering coefficient has important guiding significance for the research of stealth materials and the design of stealth aircraft. According to the inventors' knowledge and published literature, for example: Cagatay Uluisik, Gonca cakir, Mustafacakir, and Levent Sevgil: "Radar Cross Section (RCS) Modeling and Simulation, Part 1: A Tutorial Review of Definitions, Strategies, and Canonical Examples "IEEE Antennas and Propagation Magazine, Vol.50, No.1, February 2008, and SEBASTIAN R1EGGER AND WERNER WIESBECK: "Wide-Band Polarimetry and Complex Radar Cross Section Signatures", PROCEEDINGS OFTHE ...

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Application Information

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IPC IPC(8): G01S13/90
Inventor 张晓玲师君杨建宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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