| 二维fBm随机分形界面的电磁散射特性 |
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| 引用本文： | 肖志辉,张祖荫,郭伟.二维fBm随机分形界面的电磁散射特性[J].电波科学学报,2002,17(1):83-87,96. |
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| 作者姓名： | 肖志辉 张祖荫 郭伟 |
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| 作者单位： | 华中科技大学图像信息处理与智能控制教育部重点实验室,湖北,武汉,430074 |
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| 摘 要： | 应用二维fBm（分形布朗运动）模拟了这种既非完全周期的也非完全随机的实际粗糙界面，用Kirchhoff方法计算了电磁波在随机分形界面的散射特性。数值结果表明随着分形维数的增加，散射场中非相关分量逐渐增大，旁瓣增多并在镜面方向周围不断展宽。
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| 关 键 词： | 分形布朗运动 电磁散射 随机分形界面 |
| 文章编号： | 1005-0388(2002)01-0083-06 |
The scattering of EM waves from two-dimensional fBm random fractal surfaces |
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| XIAO Zhi,hui,ZHANG Zu,yin,GUO Wei.The scattering of EM waves from two-dimensional fBm random fractal surfaces[J].Chinese Journal of Radio Science,2002,17(1):83-87,96. |
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| Authors: | XIAO Zhi hui ZHANG Zu yin GUO Wei |
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| Abstract: | Two dimensional fBm (fractional Brownian motion) with fractal characteristics is applied to modeling rough surfaces, which are neither periodic nor random, and Kirchhoff approach is used to analyze the EM scattering from fractal surfaces. Numerical results show the incoherent part of scattered field increases and the sidelobes increase and broaden near specular direction with the increase of fractal dimension. |
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| Keywords: | fractaly rough surfaces fBm kirchhoff approach EM scattering |
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