目标电磁散射的面中心立方体网格FDTD方法

doi:10.12305/j.issn.1001-506X.2021.10.03

Abstract

Abstract:

Based on the spatial structure of the face-centered cube (FCC), starting from Maxwell's equation, derived the 3-D iterative formulas for the absorption boundary conditions of the uniaxial anisotropic media perfectly matched layer (UPML) and near-to-far field extrapolation boundary conditions based on the FCC grid. Through typical calculation examples, the correctness of UPML absorption boundary conditions and near-to-far field extrapolation boundary conditions based on finite difference time domain method of FCC (FCC-FDTD) are successively verified. Finally, the calculation accuracy of the FCC-FDTD method and the traditional FDTD method is compared by calculating the backward radar cross section (RCS) of the metal ball. The results show that the FCC-FDTD method has higher calculation accuracy.

Key words: face-centered cube grid (FCC), finite-difference time-domain method, uniaxial perfectly matched layer (UPML), near-to-far field extrapolation, radar cross section (RCS)

CLC Number:

O441

Lixia YANG, Liufeng WANG, Wei CHEN, Yong BO. FDTD method of face-centered cube grid for electromagnetic scatteringcharacteristics of object[J]. Systems Engineering and Electronics, 2021, 43(10): 2718-2724.

Figures/Tables 10

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References 31

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FDTD method of face-centered cube grid for electromagnetic scatteringcharacteristics of object

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