基于VSIE的电磁散射问题的有效分析

Efficient Analysis of Electromagnetic Scattering Problems Based on VSIE Method

体面积分方程方法在金属介质混合结构电磁散射问题的求解方面具有较大优势。将重叠型区域分解法(ODDM)引入体面积分方程方法 (VSIE),实现了基于重叠型区域分解法的体面积分方程方法,为进一步提高效率,引入多层快速多极子方法 (MLFMA),实现2种快速算法在VSIE上的结合。通过算例验证了这种算法占用内存小、迭代速度快、计算结果准确、具有分析复杂目标电磁散射问题的能力。

The volume-surface integral equation （ VSIE） method has the advantage in solving electromagnetic scattering problems involving complex metal and dielectric mixed structure.In this paper,a method combining VSIE with overlapped domain decomposition method （ODDM） is used to analyze electromagnetic scattering problems successfully and efficiently.To further improve efficiency,mul-tilevel fast multipole algorithm （MLFMA） is adopted,and then a novel VSIE-ODDM-MLFMA is proposed.Numerical results show that the proposed method has low memory requirement,fast convergence,and accurate simulation result.It is obvious that the proposed meth-od has the ability to analyze the electromagnetic scattering problems of complex targets.