A fast finite difference delay modeling solution of transient scattering from lossy inhomogeneous dielectric objects

作者：Ding Ji^*; Wang Yanfang; Li Jianfeng

来源：Progress in Electromagnetics Research M, 2016, 45: 17-25.

DOI：10.2528/pierm15101605

• Basis functions
• Conduction current
• Fast Fourier transform algorithm
• Inhomogeneous dielectric objects
• Memory requirements
• Numerical results
• Transient electromagnetic scattering
• Transient scattering

A fast finite difference delay modeling (FDDM)-based scheme is presented for analyzing transient electromagnetic scattering from lossy inhomogeneous dielectric objects. The proposed scheme is formulated in the region of the scatterers by expressing the total field as the sum of the incident field and the radiated field due to both the polarization and conduction current density. The current density is discretized in space by Schaubert-Wilton-Glisson basis functions and in time by finite differences. Furthermore, the scheme is accelerated by the fast Fourier transform (FFT) algorithm, which can reduce the memory requirement and computational complexity significantly. Numerical results are presented to illustrate the accuracy and efficiency of the proposed method.

• 出版日期2016
• 单位河海大学