| fBm随机粗糙面电磁散射的微扰法近似 |
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| 引用本文： | 郭立新,吴振森.fBm随机粗糙面电磁散射的微扰法近似[J].微波学报,2001,17(2):60-66. |
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| 作者姓名： | 郭立新 吴振森 |
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| 作者单位： | 西安电子科技大学理学院, |
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| 摘 要： | 本文采用二维fBm分形函数来模拟二维实际粗糙面，利用微扰法给出了fBm粗糙面的归一化散射截面的计算公式。数值计算了不同分维下的实际粗糙面的后向散射截面，并与有关实验测试结果和高斯相关分布及指数相关分布粗糙面的散射结果作了比较。
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| 关 键 词： | 微扰法 电磁散射 随机粗糙面 |
| 修稿时间： | 2000年5月23日 |
Electromagnetic Scattering from fBm Rough Surface Using Perturbation Method |
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| GUO Lixing,WU Zhensen.Electromagnetic Scattering from fBm Rough Surface Using Perturbation Method[J].Journal of Microwaves,2001,17(2):60-66. |
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| Authors: | GUO Lixing WU Zhensen |
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| Abstract: | A two dimensional fractional Brown motion (fBm) fractal model is presented for describing the natural rough surface. The small perturbation method is considered, and an expression of the normalized radar cross section from this fractal surface is obtained. Numerical results of the backscattering radar cross section for natural rough surface with different fractal dimension are given. The results of our fBm model are also compared with a set of measured data and those obtained by classical models of Gaussian and exponential correlation. |
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| Keywords: | fBm rough surface Fractal Small perturbation method Electromagnetic scattering |
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