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针对任意形状金属-介质混合目标的电磁散射问题,使用矩量法将体-面结合的积分方程(VSIE)转换成线性方程组,并利用预修正快速傅立叶变换(P-FFT)方法来进行快速求解。为减少直接计算和预修正的近区未知量个数,采用一种改进的模板拓扑。数值计算结果表明,基于VSIE的P-FFT方法可以高效准确地求解金属-介质混合目标的电磁散射问题,改进的模板拓扑可以显著减少近区未知量个数,从而减少算法的存储需求和计算时间。
In order to solve the problem of electromagnetic scattering in a metal-dielectric hybrid with arbitrary shape, the integral equation of body-surface integration (VSIE) is transformed into a linear system of equations by the method of moment, and the pre-corrected Fast Fourier Transform (P-FFT) Solve. To reduce the number of near-area unknowns that are directly calculated and pre-corrected, an improved template topology is adopted. The numerical results show that the PSI method based on VSIE can efficiently and accurately solve the electromagnetic scattering problem of the metal-dielectric hybrid target. The improved template topology can significantly reduce the number of unknown near-field and reduce the storage requirements and computation time of the algorithm .