Wide-band scattering of 1-D dispersive soil surface by the ADE-FDTD algorithm

J. Li, L.-X. Guo, Y.-C. Jiao and K. Li

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 4, 421-429

Abstract: In this paper, a wide-band scattering of one-dimensional (1-D) soil surface with exponential spectrum is investigated by the finite-difference time-domain (FDTD) algorithm with pulsed wave excitation. Soil is regarded as isotropic and dispersive media, and it satisfies the two-pole Debye model. And the auxiliary differential equation (ADE) technique is incorporated into the FDTD scheme to deal with the dispersive soil. To ensure the validity of our present method, the wide-band scattering of dispersive soil surface by the ADE-FDTD method is computed and compared with the result by the conventional method of moments (MOM), which requires an individual calculation for every frequency point of interest. Finally, the scattering characteristic of dispersive soil surface is analyzed for different parameters in detail.

Date: 2013
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DOI: 10.1080/09205071.2013.748438

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