应用FDM与AWE技术快速求解导体目标宽带RCS  

Fast Computation of Wide-Band RCS of PEC Objects Using Fast Dipole Method and Asymptotic Waveform Evaluation Technique

作　　者：聂文艳[1] 王仲根[2,3] 盛涛[3] 

机构地区：[1]淮南师范学院电气信息工程学院,安徽淮南232001 [2]安徽理工大学电气与信息工程学院,安徽淮南232001 [3]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《安徽师范大学学报（自然科学版）》2015年第2期144-148,共5页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金(61401003);计算智能与信号处理教育部重点实验室开放基金(KF201401);安徽理工大学博士启动基金(ZY507)

摘　　要：渐近波形估计(AWE)技术是分析目标宽带有效数值方法之一,但该方法需要多次存储高阶频率导数阻抗矩阵,内存消耗大.本文将快速偶极子法与AWE技术相结合,只需存储近区场阻抗矩阵及其高阶频率导数阻抗矩阵,并且大大加速了在迭代求解过程中的矩阵矢量乘积运算.与传统AWE技术相比,计算时间和内存消耗都得到了有效缩减,数值结果证明了本方法的有效性和精确性.Asymptotic waveform evaluation（AWE）technique is one of the efficient numerical approaches for calculating the wide-band radar cross section（RCS）of the object,but it causes a big consumption of storing frequency derivative impedance matrices.A new efficient numerical approach is proposed based on the combination of the fast dipole method（FDM）and the AWE technique which only needs to store nearfiled impedance matrices and frequency derivatives matrices,and also the matrix-vector multiplication in the iterative solver is accelerated. The computational time and memory consumption are reduced significantly compared with the traditional asymptotic waveform evaluation technique.Numerical results demonstrate that the proposed method is efficient and accurate.

关 键 词：矩量法 快速偶极子法 渐近波形估计 宽带雷达散射截面 

分 类 号：TN011[电子电信—物理电子学]