Three-dimensional high resolution target scattering coefficient measurement method based on bore diameter synthesizing technology

A technology of target scattering coefficient and aperture synthesis, which is used in target scattering coefficient measurement and radar fields, and can solve problems such as difficulty in obtaining complex targets, difficulty in analyzing changes in broadband signals and target scattering coefficients, and inability to obtain the distribution of scattering coefficients.

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

However, the calculation method of target scattering coefficient based on computational electromagnetics has a huge amount of calculation and inevitable calculation errors, it is difficult to obtain the scattering coefficient of complex targets (such as ships, etc.), and it is difficult to analyze the scattering coefficient caused by the interaction between broadband signals and targets Variety
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  • Three-dimensional high resolution target scattering coefficient measurement method based on bore diameter synthesizing technology
  • Three-dimensional high resolution target scattering coefficient measurement method based on bore diameter synthesizing technology
  • Three-dimensional high resolution target scattering coefficient measurement method based on bore diameter synthesizing technology

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Embodiment Construction

[0063] The present invention has verified the correctness test of the method determined by the present invention through the actual measurement data test. The measurement target is the street lamp, the metal railing next to the street lamp and the corner of the metal railing. The specific implementation steps are as follows:

[0064] Step 1. Initialize the measurement system parameters

[0065] In order to measure the target scattering coefficient, the measurement system 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 target scattering coefficient signal form index to be measured, for example, pulse signal, chirp signal, etc.; the line-of-sight resolution index ρ of the target scattering coefficient to be measured r =1.25 meters, ...

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Abstract

The invention provides a method for measuring the scattering coefficient of a three-dimensional high-resolution target, which is based on the aperture synthesis technology, and the method synthesizes a large two-dimensional antenna array by controlling the antenna to accurately move in a two-dimensional space, and then obtains 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. The characteristics of high-resolution target scattering coefficient have 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, Mustafa cakir, 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-BandPolarimetry and Complex Radar Cross Section Signatures”, PROCEEDINGS OFTHE IEEE, VOL 7...

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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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