| 高阶有限元-边界积分法在二维介质体散射中的运用 |
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| 引用本文： | 刘尧,吴先良,沙威.高阶有限元-边界积分法在二维介质体散射中的运用[J].合肥工业大学学报(自然科学版),2007,30(12):1698-1701. |
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| 作者姓名： | 刘尧 吴先良 沙威 |
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| 作者单位： | 安徽大学,电子科学与技术学院,安徽,合肥,230039 |
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| 基金项目： | 国家自然科学基金资助项目(60371041,60671051) |
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| 摘 要： | 以2阶、3阶基函数为例,应用高阶有限元-边界积分法分析了二维介质体电磁散射特性。计算了2种介质材料不同,电尺寸不同的二维介质方柱的雷达散射截面,结果与矩量法一致。对3种数值结果进行了误差分析,结果表明,高阶有限元-边界积分法比1阶有更高的计算精度、收敛速度和计算效率。
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| 关 键 词： | 高阶有限元 边界积分法 介质体散射 雷达散射截面 |
| 文章编号： | 1003-5060(2007)12-1698-05 |
| 修稿时间： | 2006年12月4日 |
Application of high-order finite element-boundary integral method to two-dimensional dielectric scattering problems |
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| LIU Yao,WU Xian-liang,SHA Wei.Application of high-order finite element-boundary integral method to two-dimensional dielectric scattering problems[J].Journal of Hefei University of Technology(Natural Science),2007,30(12):1698-1701. |
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| Authors: | LIU Yao WU Xian-liang SHA Wei |
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| Abstract: | Using the second-order and third-order basis functions,the high-order finite element method(FEM) in conjunction with the boundary integral method(BIE) is used to analyze electromagnetic scattering characteristics of two-dimensional dielectric objects.As the examples,the radar cross section(RCS) of two two-dimensional dielectric square cylinders which are different in both dielectric material and electric size is calculated,the results agree well with those by the method of moments(MOM).The error of the results is analyzed.The numerical results indicate that the high-order FEM-BIE is higher in precision and efficiency and faster in the convergence rate than the first-order FEM-BIE. |
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| Keywords: | high-order finite element boundary integral method dielectric scattering radar cross section |
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