GTD模型在目标谐振区散射机理建模中的适用性分析

王党卫; 马兴义; 关鑫璞; 王少刚; 粟毅

doi:10.3724/SP.J.1146.2005.01456

GTD模型在目标谐振区散射机理建模中的适用性分析

doi: 10.3724/SP.J.1146.2005.01456

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出版历程
- 收稿日期: 2005-11-15
- 修回日期: 2006-04-28
- 刊出日期: 2007-06-19

Applicability Analysis of GTD Model for Target Scattering Mechanism Modeling in Resonance Band

摘要

摘要: 为了弄清光学区目标散射模型GTD模型在目标谐振区散射机理分析中的适用性，该文提出了一种基于匹配追踪的GTD参数提取新算法。在此基础上，利用该算法和Li 的最小二乘拟合方法，分别使用GTD模型，Altes模型以及扩展了的Altes模型对导体球体谐振区理论散射场和实测有限长柱体的超宽带散射场进行了分析，并通过对提取的散射类型参数与拟合结果的对比分析给出了几点有意义的结论。
- 目标识别;GTD模型;散射机理
Abstract: In order to demonstrate the effectiveness of GTD model, usually used to model the target scattering behaviors in optical frequency band, for target resonance band, a new method for the GTD model parameters extraction based on matching pursuits is proposed in this paper. Then, the proposed method and Lis least-square-fitting scheme are used to analyze the resonance scattering data of a aluminum sphere and the measured ultra-wide band scattering data of a finite-length cylinder through the GTD model, Altes model and extended Altes model. Furthermore, after contrasting the scattering behavior parameters and fitting results, some important conclusions are obtained.

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