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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Facet Model of Moving Targets for ISAR Imaging and Radar Back-Scattering Simulation
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Facet Model of Moving Targets for ISAR Imaging and Radar Back-Scattering Simulation

机译：ISAR成像和雷达反向散射仿真的移动目标的方面模型

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摘要

A facet model of targets is proposed to simulate inverse synthetic aperture radar (ISAR) images and radar back-scattering of moving targets with rigid and nonrigid motions. Targets are composed of solid objects which are modeled by triangular facets. It is shown that a facet can be treated as an equivalent point-scatterer whose radar cross section (RCS) and position depend on the shape of the triangle, the frequency, and the angle of incidence. A shadowing algorithm is also developed to detect the facets which actually have influence on the signal received by the radar. Besides, a facet division algorithm is implemented to improve the result of the shadowing algorithm and to have at least one facet per resolution cell. Finally, we apply our simulator to obtain the ISAR images of a ship and a helicopter and to calculate the micro-Doppler signature of a human.
机译：提出了一种目标的方面模型，以模拟反向合成孔径雷达（ISAR）图像以及具有刚性和非刚性运动的运动目标的雷达后向散射。目标由由三角形小面建模的实体对象组成。结果表明，可以将小平面视为等效的点散射器，其雷达横截面（RCS）和位置取决于三角形的形状，频率和入射角。还开发了阴影算法来检测实际上影响雷达接收信号的方面。此外，实施小平面划分算法以改善阴影算法的结果，并且每个分辨率像元至少具有一个小平面。最后，我们使用模拟器获得舰船和直升机的ISAR图像，并计算人的微多普勒签名。

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