随机粗糙表面上运动目标的多普勒频移分布

2011 International Conference on Broadband and Wireless Computing, Communication and Applications Pub Date : 2011-10-26 DOI:10.1109/BWCCA.2011.78

K. Uchida, J. Honda, S. Nakashima

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引用次数: 2

摘要

本文研究了在沙漠、丘陵、海面等随机粗糙表面上飞行的目标的电磁波后向散射问题。首先介绍了用于电磁场分析的离散射线追踪法。其次，研究了RRS后向散射对杂波的影响。最后，给出了任意高度偏差(dv)和相关长度(cl)的高斯型RRSs上空飞行的目标后向散射的数值算例。结果表明，相对于雷达与目标之间的直接射线和间接射线通过雷达与目标之间的反射所得到的减后散射，雷达与目标之间的反射所产生的杂波要明显得多。对多普勒频移的统计也进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Doppler Shift Distribution of Target Moving above Random Rough Surface

This paper is concerned with an analysis of the back scattering of electromagnetic waves from a target flying just above a random rough surface (RRS) such as desert, hilly terrain, sea surface and so on. First we introduce the discrete ray tracing method (DRTM) for electromagnetic field analyses. Second we investigate the effect of clutter due to the back scattering from RRS. Finally we show some numerical examples for back scattering from a target flying above Gaussian type of RRSs with arbitrary height deviation (dv) and correlation length (cl). It is demonstrated that clutters caused by reflections from RRS are much more predominant than the subtracted back scattering obtained by direct rays between radar and target together with indirect rays between them via reflections from RRS. Statistics of Doppler shift are also discussed.

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2011 International Conference on Broadband and Wireless Computing, Communication and Applications

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