FE-BI分析等离子体覆盖导体方柱的宽带RCS  

Analysis of wide-band RCS of perfectly conducting square coated with plasma by using FE-BI method

作　　者：胡金花[1] 陈明生[1] 吴先良[1] 

机构地区：[1]合肥师范学院物理与电子工程系,安徽合肥230061

出　　处：《合肥工业大学学报（自然科学版）》2011年第9期1361-1364,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金重点资助项目(60931002);安徽省优秀青年科技基金资助项目(10040606Y08);合肥师范学院2011院级自然科学研究基金一般资助项目(2011kj05)

摘　　要：文章将有限元-边界积分法(FE-BI)与渐进波形估计技术(AWE)相结合应用到宽带电磁散射特性分析中。首先应用该理论计算导体方柱的宽带雷达散射界面(RCS)并与FE-BI逐点计算进行了比较,接着计算了导体表面覆盖不同密度、不同碰撞频率的等离子体的宽带RCS。计算结果表明,FE-BI结合AWE技术比有限元逐点计算省时,且等离子体的使用能有效地减小雷达散射截面。Based on the finite element-boundary integral（FE-BI） method and the asymptotic waveform evaluation（AWE） technique,an efficient method for analyzing the wide-band electromagnetic scattering is proposed.Firstly,the wide-band radar cross section（RCS） of a perfectly conducting square is computed by using the proposed method,and the result is compared with that obtained by the FE-BI point-by-point method.Then the wind band RCS of the square coated with plasma of different density and collision frequency is computed.Numerical results demonstrate that,in comparison with the FE-BI method,the computation time could be saved by using the FE-BI and AWE hybrid method,and the RCS could be efficiently reduced by using plasma.

关 键 词：有限元-边界积分法 渐进波形估计 等离子体 宽带雷达散射截面 

分 类 号：TN011[电子电信—物理电子学]