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PIER PIER B PIER C PIER M PIER Letters
2011-11-02
Time-Domain Iterative Physical Optics Method for Analysis of EM Scattering from the Target Half Buried in Rough Surface: PEC Case
By
Jie Li,

    Dr. Jie Li

    Department of Electrical and Computer Engineering

    Michigan State University

    USA

    Homepage

Bing Wei,

    Prof. Bing Wei

    Department of Physics, School of Science

    Xidian University

    China

    Homepage

Qiong He,

    Dr. Qiong He

    Department of Physics

    Xidian University

    China

    Homepage

Li-Xin Guo,

    Professor Li-Xin Guo

    Physics Department

    Xidian Unviersity

    China

    Homepage

De-Biao Ge

    Dr. De-Biao Ge

    Xidian university

    China

    Homepage

Progress In Electromagnetics Research, Vol. 121, 391-408, 2011
doi:10.2528/PIER11082906
Abstract
In this paper, time-domain physical optics (TDPO) method is extended to its iterative version (TDIPO) to consider the coupling effects between two regions, and the latter is employed to investigate electromagnetic scattering from three dimensional target half-buried by a two dimensional rough surface. By using iterative scheme, more accurate transient response reflected from combinative target with multi-scattering effects would be obtained than that by using TDPO alone. The TDIPO could also be enhanced by time-domain equivalent edge current (TDEEC) to further determine the far-field characteristics of the combinative target with rough surface. An accurate composite geometry model technique which combines 2D perfectly electrically conducting (PEC) rough surface and half-buried 3D PEC target is introduced and employed to assist the meshing work. The validity of the presented method is verified by comparing the scattering results for dihedral targets with those obtained through TDPO and finite difference in time domain (FDTD), as well as multi-level fast multiple algorithm (MLFMA). Then simulations of EM scattering from the target embedded in rough surface for different incidence directions are carried out to test the availability of TDIPO/EEC. Discussions on the effects of incidence direction and the presence of the target on the backscattering in far-zone are also given.
Citation
Jie Li, Bing Wei, Qiong He, Li-Xin Guo, and De-Biao Ge, "Time-Domain Iterative Physical Optics Method for Analysis of EM Scattering from the Target Half Buried in Rough Surface: PEC Case," Progress In Electromagnetics Research, Vol. 121, 391-408, 2011.
doi:10.2528/PIER11082906
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