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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Canonical Scattering Feature Models for 3D and Bistatic SAR
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Canonical Scattering Feature Models for 3D and Bistatic SAR

机译：3D和双基地SAR的典型散射特征模型

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摘要

This paper develops three-dimensional (3D), bistatic parametric models that describe canonical radar scattering responses of several geometric objects. These models find use in inverse scattering-based processing of high-frequency radar returns. Canonical feature models are useful for extracting geometry from synthetic-aperture radar (SAR) scattering measurements and as feature primitives for automatic target recognition (ATR) and scene visualization. Previous work has considered monostatic feature models for two-dimensional (2D) radar processing; we extend this work to consider bistatic and 3D radar apertures. In the work presented here, we generalize geometric theory of diffraction (GTD) solutions for several scattering mechanisms in a plane. Products of these planar mechanisms in azimuth and elevation are used to produce 3D bistatic scattering models for six canonical shapes: a rectangular plate, dihedral, trihedral, cylinder, top-hat, and sphere. The derived models are characterized by a small number of parameters, and are shown to agree with results obtained from high-frequency, asymptotic scattering simulations.
机译：本文开发了三维（3D）双静态参数模型，该模型描述了几个几何物体的标准雷达散射响应。这些模型可用于基于逆散射的高频雷达回波处理中。规范特征模型可用于从合成孔径雷达（SAR）散射测量结果中提取几何图形，并可用作自动目标识别（ATR）和场景可视化的特征基元。先前的工作已经考虑了用于二维（2D）雷达处理的单静态特征模型。我们将这项工作扩展到考虑双基地和3D雷达孔径。在这里介绍的工作中，我们对平面中几种散射机制的衍射几何理论（GTD）进行了概括。这些平面机制在方位角和仰角上的乘积用于生成六种规范形状的3D双基地散射模型：矩形板，二面体，三面体，圆柱体，礼帽和球体。导出的模型具有少量参数，并且与高频渐近散射仿真获得的结果一致。

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