一种电大目标散射特性的核外并行快速算法  

A parallel out-of-core fast algorithm for scattering characteristic of electrically large target

作　　者：吴君辉[1] 曹祥玉[1] 袁浩波[2] 高军[1] 封同安[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]西安电子科技大学天线与微波技术国防重点实验室,陕西西安710071

出　　处：《电波科学学报》2013年第6期1178-1182,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金(60671001,61072018,61271100);陕西省自然科学基金(2010JZ010,2012JM8003))

摘　　要：矩量法计算电大目标雷达散射截面(Radar Cross Section,RCS)将消耗巨大计算机资源.采用自适应交叉近似算法(Adaptive Cross Approximation Algorithm,ACA)降低了计算量和存储量,同时结合核外求解技术,并对算法进行了并行化处理,从而进一步降低了大型计算对计算硬件的需求,提高了计算速度.通过算例证明了该算法在不损失矩量法精度的前提下可大幅缩减计算时间和内存需求.radar cross section（RCS） calculation of electrically large target using method of momen costs huge computer resource. The adaptive cross approximation （ACA）algorithm was applied to reduce the computation complexity and storage. Combined with the out-of-core solve technology, the above algorithm was paralleled to reduce hardware cost of large computation and improve compute speed further. Through a numerical example, it proves that the memory and compute time is re duced by this algorithm without losing the accuracy of method of moment （MoM）.

关 键 词：自适应交叉近似算法 矩量法 核外求解 并行计算 

分 类 号：TN011[电子电信—物理电子学]