论文部分内容阅读
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。
In the method of characteristic basis function, a series of basic characteristic functions of plane wave generated from various angles of space are used to construct the orthogonal basis function group which has nothing to do with the angle of incidence and polarization by using the multi-layer singular value decomposition technique. The linear combination of the basis functions of the set determines the surface current distribution of the metal target irradiated by the plane wave at an arbitrary angle so as to quickly calculate the RCS curve of the metal target single station. In this paper, physical optics and binary tree dynamic storage technology to further reduce storage requirements and the initial basis function of the calculation time. Numerical examples show the correctness and high efficiency of the proposed method.