摘要
以二阶、三阶基函数为例,应用高阶有限元-边界积分法分析了二维散射体电磁散射特性。计算了几种二维方柱(导体和介质)的雷达散射截面,结果与矩量法一致,对三种数值结果进行了误差分析。结果表明:高阶有限元-边界积分法比一阶有限元-边界积分法有着更高的计算精度、收敛速度和计算效率。
Using the second- order and third - order basic functions, the high - order Finite Element Method （FEM） in conjunction with Boundary Integral Method （BIM） is used to analyze electromagnetic scattering characteristics of two- dimensional objects. As the examples,the Radar Cross Sections （RCS） of some two- dimensional square cylinders（conductor and dielectric） are calculated,the results agree well with those obtained by Method of Moments （MOM）. The error of result is analyzed. Compared with first- order FEM - BIM, numerical results suggest that the high - order FEM - BIM has higher precision,faster convergence rate and more efficiency.
出处
《现代电子技术》
2008年第5期1-4,共4页
Modern Electronics Technique
基金
国家自然科学基金资助项目(60671051)
关键词
高阶有限元
边界积分法
二维散射体
雷达散射截面
high- order finite element
boundary integral method
two - dimensional objects
radar cross section
