电大尺寸复杂目标散射问题的并行矩量法分析

Parallel MOM Analysis of Scattering Problems of Electrically Large Complex Targets

目前飞机和导弹等电大尺寸复杂目标的电磁散射特性采用高频分析法精度较低,本文研究在PC集群环境下三维导体散射问题矩量法的并行化,并应用于复杂目标的RCS计算。本文使用混合积分方程,再用RWG基函数进行离散,阻抗矩阵元素按行分解,并行共轭梯度法进行求解,通过MPI通信库实现。最后使用基准目标NASA杏仁核验证了该并行计算的准确性。

In order to solve the problem of low precision of high frequency analysis method for electromagnetic scattering characteristics of complex targets with large size such as aircraft and missiles,the parallel computation of MOM for 3D conductor scattering problem in PC cluster environment is studied and applied to RCS calculation of complex targets in this paper.Firstly,the mixed integration is used.Sencondly,the RWG basis function is used for discretization,and the impedance matrix elements are decomposed in rows.Then the parallel conjugate gradient method is used to solve the problem,which is realized by MPI communication library.Finally,the accuracy of the parallel computation is verified by using the benchmark NASA amygdala.