| 有限元-边界元耦合法计算任意截面形状二维介质柱雷达散射截面 |
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| 引用本文： | 周平,朱汉清.有限元-边界元耦合法计算任意截面形状二维介质柱雷达散射截面[J].淮阴师范学院学报(自然科学版),2004,3(4):281-284. |
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| 作者姓名： | 周平 朱汉清 |
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| 作者单位： | 淮阴师范学院,物理系,江苏,淮安,223001;淮阴师范学院,物理系,江苏,淮安,223001 |
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| 基金项目： | 江苏省教育厅自然科学基金资助项目(02KJD140007) |
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| 摘 要： | 应用有限元 边界元耦合法计算任意截面形状二维介质柱的雷达散射截面.对介质柱内、外区域分别应用有限元和边界元法进行分析,然后通过场的连续性进行耦合,形成待求矩阵方程,最后应用内观法结合多波前法求解该方程.作为算例,分别计算了几种柱体的雷达散射截面.数值结果表明,由于使用了内观法结合多波前法解非对称稀疏矩阵,大大减少了计算时间.
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| 关 键 词： | 有限元法 边界元法 内观法 电磁散射 雷达散射截面 |
| 文章编号： | 1671-6876(2004)04-0281-04 |
| 修稿时间： | 2004年10月8日 |
Calculation of Radar Cross Section of Arbitrarily Shaped Two-dimensional Dielectric Cylinder by Using Coupling of Finite Element-boundary Element Method |
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| ZHOU Ping,ZHU Han-qin.Calculation of Radar Cross Section of Arbitrarily Shaped Two-dimensional Dielectric Cylinder by Using Coupling of Finite Element-boundary Element Method[J].Journal of Huaiyin Teachers College(Natrual Science Edition),2004,3(4):281-284. |
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| Authors: | ZHOU Ping ZHU Han-qin |
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| Abstract: | In this paper, the coupling of finite element method (FEM) and boundary element method (BEM) is used to calculate radar cross section(RCS) of arbitrarily shaped two-dimensional dielectric cylinder. The interior problem involving medium is solved by the FEM and the exterior problem is solved by the BEM. By using the continuities of tangential field condition to obtain the matrix equation. Last, the inward-looking approach and multifrontal method are applied to solve the equation. As the verification example, the RCS of four kinds of dielectric cylinders are calculated. Numerical results demonstrate that CPU time is greatly reduced by using inward-looking approach and multifrontal method to solve the equation. |
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| Keywords: | finite element method boundary element method inward-looking approach electromagnetic scattering radar cross section(RCS) |
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