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PIER PIER B PIER C PIER M PIER Letters
2010-02-01
FDTD Method Investigation on the Polarimetric Scattering from 2-d Rough Surface
By
Juan Li,

    Dr. Juan Li

    School of Science

    Xidian University

    China

    Homepage

Li-Xin Guo,

    Professor Li-Xin Guo

    Physics Department

    Xidian Unviersity

    China

    Homepage

Hao Zeng

    Dr. Hao Zeng

    School of Science

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research, Vol. 101, 173-188, 2010
doi:10.2528/PIER09120104
Abstract
A polarimetric scattering from two-dimensional (2-D) rough surface is presented by the finite-difference time-domain (FDTD) algorithm. The FDTD calculations with sinusoidal and pulsed plane wave excitations are performed. As the sinusoidal FDTD is concerned, it is convenient to obtain the scattered angular distribution of normalized radar cross section (NRCS) from rough surface for a single frequency. And the advantage of pulsed FDTD is to calculate the frequency distribution of NRCS from rough surface in a scattered direction of interest. A single frequency scattering from rough surface by sinusoidal FDTD is validated by the result of Kirchhoff Approximation (KA). And the frequency response of rough surface by pulsed FDTD is verified by that of sinusoidal FDTD, which requires an individual FDTD run for every frequency. To save computation time, the MPI-based parallel FDTD method is adopted. And the computation time of parallel FDTD algorithm is dramatically reduced compared to a single-process implementation. Finally, the polarimetric scattering of rough surface with the sinusoidal and pulsed FDTD illumination are presented and analyzed for different polarizations.
Citation
Juan Li, Li-Xin Guo, and Hao Zeng, "FDTD Method Investigation on the Polarimetric Scattering from 2-d Rough Surface," Progress In Electromagnetics Research, Vol. 101, 173-188, 2010.
doi:10.2528/PIER09120104
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