应用RACA算法快速求解导体目标RCS

Fast calculation of the RCS of conducting targets by using RACA algorithm

针对矩量法计算量大、耗时长、消耗内存多的问题,提出了一种分析导体目标电磁散射特性的有效数值方法。该方法以自适应交叉近似算法为基础,通过奇异值分解对自适应交叉近似算法得到的缩减矩阵进一步压缩,减少了矩阵存储并加速矩阵矢量乘。另外,该方法还采用等效偶极子法加速阻抗矩阵元素的填充。与传统矩量法相比,计算时间和内存消耗都得到了有效缩减。数值结果证明了该方法的精确性和高效性。

An efficient numerical approach is proposed to analyze the electromagnetic scattering characteristics.The adaptive cross approximation algorithm (ACA)is applied in our method.The reduced matrix get from ACA is further compressed by singular value decomposition,which leads to reduce matrix storage and accelerate matrix vector product.Furthermore,the equivalent di-pole-moment method (EDM)is also used to accelerate the filling of impedance matrix elements.Compared with the traditional method of moment,the computational time and memory consumption are reduced significantly.Numerical results demonstrate that the proposed method is accurate and efficient.