电大目标RCS的高频计算方法  

High-Frequency Calculation Method for RCS of Electrically Large Objects

作　　者：刘松华[1] 郭立新[1] 

机构地区：[1]西安电子科技大学理学院,西安710071

出　　处：《微波学报》2010年第S1期20-23,共4页Journal of Microwaves

基　　金：航空科学基金项目(20080181001);西安电子科技大学基本科研业务费资助(72105480);高等学校博士学科点专项科研基金(20070701010)

摘　　要：研究了电大尺寸复杂军事目标—导弹与飞机电磁散射的PO计算方法。根据MPI并行平台的特点,给出了将PO三角面元按照编号循环分配到不同进程,进行并行遮挡判断的详细过程。以简单的球面模型为例,通过对比不同进程的计算时间,给出了本文方法的并行加速比,表明了该并行方案的高效性。然后给出了电大尺寸导弹与飞机目标RCS的计算实例。采用FEKO软件对实际军事目标进行建模和三角面元剖分,运用基于PC集群MPI并行平台的并行PO方法计算了导弹与飞机目标的RCS,结果表明了该方法的有效性和准确性。The PO method is presented for solving the EM scattering from the electrically large complex martial targets-missile and flight.According to the property of MPI,the occlusion identification is parallelized through cyclically scheduling the PO triangles to different processes by their numbers.Taking simple sphere for example,the parallel speedup factor is shown by comparing the computational time of different processes,which proved the efficiency of the parallel method.Then,the instance for solving RCS of the missile and flight targets with electrically large size is given.The modeling and triangular meshing of the real martial targets are investigated by FEKO.Based on the MPI of PC clusters,the parallel PO is applied for obtaining the RCS of the missile and flight targets.The results validate the effectiveness and correctness of the method.

关 键 词：物理光学法 并行计算 电大尺寸 雷达散射截面 

分 类 号：TN011[电子电信—物理电子学]