| 高斯粗糙面与临空目标复合电磁散身寸的KH-MOM解 |
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| 引用本文： | 李西敏,童创明,付树洪,李晶晶.高斯粗糙面与临空目标复合电磁散身寸的KH-MOM解[J].电波科学学报,2010,25(6). |
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| 作者姓名： | 李西敏 童创明 付树洪 李晶晶 |
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| 作者单位： | 空军工程大学,导弹学院,陕西,三原,713800;空军工程大学,导弹学院,陕西,三原,713800;毫米波国家重点实验室,江苏,南京,210096 |
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| 基金项目： | 毫米波国家重点实验室基金项目资助(K200818) |
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| 摘 要： | 提出了一种求解一维粗糙面与二维无限长临空目标复合电磁散射特性的新型混合算法。混合算法只需在粗糙面上进行一次积分运算,即可用基尔霍夫-亥姆霍兹方程(KH)描述电磁波经粗糙面后的散射情况,再用矩量法(MoM)分析目标的散射问题,通过KH与MoM的混合来体现粗糙面与目标之间的耦合作用。经与不同方法的对比,验证了混合方法的正确性,体现了混合方法较数值法在求解效率上的巨大优势。计算了粗糙面与临空目标的统计复合散射特性,分析了粗糙面的起伏参数、临空目标的形状以及粗糙面介质的电参数对复合散射特性的影响。
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| 关 键 词： | 复合电磁散射 基尔霍夫-亥姆霍兹方程 矩量法 粗糙面与临空目标 |
KH-MoM solution of composite EM scattering from object at low altitude over Gaussian random surfaces |
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| LI Xi-min TONG Chuang-ming, FU Shu-hong LI Jing-jing.KH-MoM solution of composite EM scattering from object at low altitude over Gaussian random surfaces[J].Chinese Journal of Radio Science,2010,25(6). |
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| Authors: | LI Xi-min TONG Chuang-ming FU Shu-hong LI Jing-jing |
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| Affiliation: | LI Xi-min1 TONG Chuang-ming1,2 FU Shu-hong1 LI Jing-jing1(1.Missile Institute of Air Force Engineering University,Sanyuan Shaanxi 713800,China,2.State Key Laboratory of Millimeter Waves,Nanjing Jiangsu 210096,China) |
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| Abstract: | A novel hybrid method for solving composite electromagnetic(EM)scattering problem of 1-D random surface and the 2-D object at low altitude is proposed.Kirchhoff-Helmholtz(KH)equations are adopted to describe the wave scattering on the rough surface,and only one integral operation is needed.Then method of moment(MoM)is used to calculate the induced current on the object,and the coupling of random surface and object is considered by introducing KH equations into MoM.Compared with different methods,the accurac... |
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| Keywords: | composite EM scattering KH equations MoM random surface and object |
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