【摘要】 提出了一种简单有效的计算大型二维阵列雷达散射截面的新方法.利用分域全域基(SED)构建基函数,采用前后向迭代过程(FBM)解矩阵方程,并利用离散傅里叶变换(DFT)在谱域降低了矩阵向量积计算量.与广泛应用的多层快速多极子(MLFMM)方法相比,对于阵列未知量个数为N的问题,此方法在保证结果准确的前提下,使总的计算量和内存要求均由O(NlogN)降为O(N),可用于快速分析大规模的任意形状单元有限阵列.更多还原

【Abstract】 A new algorithm is presented for analyzing the RCS of large-scale finite arrays,using SED(sub-entire-domain functions) to construct the basis functions,FBM(Forward-Backward-Method) in solving the linear equations and DFT(Discrete Fourier Transform) to accelerate the inner product of the vector.Compared with the existing MLFMM which has been widely used,the new method which can guarantee the accuracy of results reduces the computational complexity and the memory storage from O(NlogN) to O(N),where N is the number of unknowns of the array.This new method can be used to analyze very large finite arrays,and numerical examples are presented to demonstrate its validity.更多还原