文档介绍：Hessen was revised in January 2021
矩量法论文电大导体目标宽带RCS快速计算的关键技术研究
矩量法论文：电大导体目标宽带RCS快速计算的关键技术研究
【中文摘要】在计算电磁ic field integral equation. Their performances will be compared through the numerical results from different examples. In order to improve the convergence rate of iterative method, the preconditioning technique is elaborated. The inner-outer iterative near field preconditioning technique combined with the AWE technique improve greatly the computational efficiency of wide-band RCS for least square fitting (LSF) method, which is originally used to the curve fitting, is first introduced into the study of bandwidth electromagnetic scattering property for object. Compared with the AWE technique, the LSF method needs less memory in computational process. Thus, the method can improve computational efficiency without sacrificing any accuracy and may be applied to the computation of wide-band RCS for electrically large target. Finally, the parallel computing is studied in this thesis. Under the Windows operating system, a cluster computing system is built using personal computer. The message passing interface (MPI), which has been widely utilized in parallel computing, will be used as parallel environment. The AWE technique will be paralleled first in this thesis. The numerical examples show that the AWE technique combined with the parallel computing can reduce signif