摘要
在特征基函数方法中,应用多层奇异值分解技术,由空间各个角度入射的一系列平面波谱生成的初次特征基函数构造出与入射角度、极化方式无关的正交特征基函数组,通过该组基函数的不同线性组合,求出平面波以任意角度照射下金属目标的表面电流分布,进而实现金属目标单站RCS曲线的快速计算。文中结合物理光学法和二叉树动态存储技术,进一步降低存储需求和初次基函数的计算时间。数值算例表明本文方法的正确性和高效性。
On the CBFM method,we apply multilayer SVD technology to construct a set of orthogonal CBFs independent of angle and polarization.This group orthogonal CBFs is built by PCBFs which are made by a set of plane spectrums of different space angels.By different linear combination using this group basic functions,we get surface current distribution of PEC object irradiated by different angular plane waves.Then we can calculate PEC object's monotonic RCS fastly.This article combines PO method and binary tree dynamic storage technique,so it can reduce storage space and CPU time.Numerical results show the correctness and effectiveness of this method.
出处
《微波学报》
CSCD
北大核心
2010年第2期7-10,14,共5页
Journal of Microwaves
基金
航空基金资助项目(2008ZA52)