摘要
应用有限元-边界元耦合法计算任意截面形状二维各向异性介质覆盖导体柱的雷达散射截面,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,分别计算了无限长各向同性介质覆盖导体方柱和圆柱在平面电磁波照射下的雷达散射截面,结果与有关文献一致,在此基础上计算了各向异性介质覆盖导体方柱和圆柱的雷达散射截面.
In this paper, the coupling of finite element method （FEM） and boundary element method （BEM） is used to calculate radar cross section（RCS） by arbitrarily shaped two-dimensional conducting bodies coated with anisotropic dielectric. The interior problem involving anisotropic dielectric is solved by the FEM and the exterior problem is solved by the BEM. Then the coupling of the field＇ s continuty obtain the matrix equation. Last, the inward-looking approach and multifrontal method are applied to solve the equation. As the verification example, the radar cross section（RCS） of infinite conducting bodies square post and circular post coated with isotropic dielectric excited by plane wave are obtained. The results in this paper agree well with those in previous works. Based on these, the RCS of metal square post and circular post coated with anisotropic dielectric are calculated.
出处
《淮阴师范学院学报（自然科学版）》
CAS
2006年第4期287-291,共5页
Journal of Huaiyin Teachers College;Natural Science Edition
基金
江苏省高校自然科学基金资助项目(06KJD510028)
关键词
有限元法
边界元法
电磁散射
雷达散射截面
各向异性介质
finite element method
boundary element method
electromagnetic scattering
radar cross section （RCS）
anisotropic dielectric
