| 填充各向异性介质二维开口腔体散射特性分析 |
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| 引用本文： | 周平,徐金平.填充各向异性介质二维开口腔体散射特性分析[J].南京航空航天大学学报,2005,37(6):782-786. |
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| 作者姓名： | 周平 徐金平 |
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| 作者单位： | 1. 南京航空航天大学信息科学与技术学院,南京,210016;淮阴师范学院物理系,淮安,223001
2. 东南大学毫米波国家重点实验室,南京,210096 |
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| 基金项目： | 江苏省教育厅自然科学基金（02KJDl40007）资助项目. |
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| 摘 要： | 应用非重叠型区域分解法(DDM)结合有限元法(FEM)和边界元法(BEM)分析了填充多层各向异性介质的二维开口腔体横电波(TE)散射特性。对腔体外的区域采用BEM法分析,将腔体内的每层介质作为一个子域,用FEM法分析,各子域间通过传输条件进行耦合。分别计算了腔体中填充各向同性和各向异性介质时的雷达散射截面,数值结果表明了该方法的有效性。采用这种技术,大大地减少了对计算机内存的需求。
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| 关 键 词： | 区域分解法 有限元法 边界元法 各向异性介质 雷达散射截面 |
| 文章编号： | 1005-2615(2005)06-0782-05 |
| 收稿时间： | 2004-11-02 |
| 修稿时间： | 2005-05-11 |
Analysis of Scattering Property by Two-Dimensional Open Cavity Filled with Anisotropic Dielectric |
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| ZHOU Ping,XU Jin-ping.Analysis of Scattering Property by Two-Dimensional Open Cavity Filled with Anisotropic Dielectric[J].Journal of Nanjing University of Aeronautics & Astronautics,2005,37(6):782-786. |
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| Authors: | ZHOU Ping XU Jin-ping |
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| Abstract: | A nonoverlapping domain decomposition method(DDM) and the finite element method(FEM)/boundary element method(BEM) are combined to analyze transverse electric(TE) wave scattering properties by a two-dimensional open cavity filled with the multilayer anisotropic dielectric.The BEM is used to analyze the electromagnetic field outside the cavity.Each kind of the dielectric in the cavity is regarded as a subdomain and analyzed by the FEM.Coupling of different subdomains is achieved by the transmission condition on the interface.As a verification example,the radar cross section(RCS) by the twodimensional open cavity filled with the isotropic dielectric and the anisotropic dielectric is calculated,respectively.Numerical results demonstrate its accuracy and efficiency.In this way,the required computer memory is greatly reduced. |
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| Keywords: | domain decomposition method(DDM) finite element method(FEM) boundary element method(BEM) anisotropic dielectric radar cross section(RCS) |
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