| 分形粗糙表面掠入射时的全极化指数计算 |
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| 引用本文： | 马军林,黄泽贵,童创明.分形粗糙表面掠入射时的全极化指数计算[J].上海航天,2006,23(6):33-36. |
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| 作者姓名： | 马军林 黄泽贵 童创明 |
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| 作者单位： | 空军工程大学导弹学院,陕西,三原,713800 |
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| 基金项目： | 陕西省自然科学基金(2005F23)，空军工程大学学术联合基金(KGD-XL-02-2004-02) |
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| 摘 要： | 为分析经典解析法不能有效求解掠入射时粗糙表面的散射特性,用高阶微扰法计算了二维分形导体表面的后向散射系数。计算值与测量值的比较证明了高阶微扰法的有效性。对不同粗糙度下掠入射时全极化指数的研究,获得了不同入射条件下极化指数与掠入射角余切函数曲线的拟合和有效表达式,修正了前人的结论,并发现用高阶解析法可区分粗糙表面的类型。
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| 关 键 词： | 分形粗糙面 掠入射 极化指数 散射系数 高阶微扰法 |
| 文章编号： | 1006-1630（2006）06-0033-04 |
| 收稿时间： | 2005-11-25 |
| 修稿时间： | 2006-05-23 |
Study on the Full-Polarized Exponent of Fractal Rough Surface at Grazing Angle |
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| MA Jun-lin,HUANG Ze-gui,TONG Chuang-ming.Study on the Full-Polarized Exponent of Fractal Rough Surface at Grazing Angle[J].Aerospace Shanghai,2006,23(6):33-36. |
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| Authors: | MA Jun-lin HUANG Ze-gui TONG Chuang-ming |
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| Institution: | Missile Institute of Air Force Engineering University, Sanyuan Shaanxi 713800, China |
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| Abstract: | To analysis the scattering characteristic at low grazing angle which could not be settled by classical analytic method,the backscattering coefficient of 2-D fractal conducting rough surface was calculated by the high-order small perturbation method(HSPM) in this paper.The comparison of the computation and measurement approved the validity of HSPM.The approximate curve of polarized exponent compared with different in power cotangent function for fractal rough surface was obtained by the study on the full-polarized exponent at low grazing angle,which rectified the former researcher's conclusion.It was found that the type of fractal rough surface would be identified by HSPM. |
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| Keywords: | Fractal rough surface Grazing incident Polarized exponent Scattering coefficients High-order small perturbation method |
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