Analysis of scattering from fractally rough surfaces by using the T-matrix method

Xiande Wang; Xianyun Luo; Zhongzhi Zhang; Junmei Fu

doi:10.1117/12.319478

19 August 1998 Analysis of scattering from fractally rough surfaces by using the T-matrix method

Xiande Wang, Xianyun Luo, Zhongzhi Zhang, Junmei Fu

Proceedings Volume 3503, Microwave Remote Sensing of the Atmosphere and Environment; (1998) https://doi.org/10.1117/12.319478
Event: Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 1998, Beijing, China

Abstract

In this paper, a time-varying band-limited fractal model is proposed for modeling dynamic evolution of sea surface. A new method for scattering from fractally rough perfectly conducting or dielectric surfaces is formulated with use of the T-matrix analysis and the extended boundary condition method. We expand the field through generalized Floquet modes and obtain the analytical formula of the expression of matrix elements in the term of the Bessel functions. We obtain analytical closed-form expression for the scattering amplitudes for both horizontal and vertical polarization of the incident electromagnetic waves. The validity of this method is checked through the energy-balance parameter and comparison with approximate method. Backscattering energy pattern versus incident angle, fractal dimension have also been discussed. We also calculate the scattering coefficient as function of time using this method. Finally, numerical scattering results from fractal surfaces are provided.

Citation Download Citation

Xiande Wang, Xianyun Luo, Zhongzhi Zhang, and Junmei Fu "Analysis of scattering from fractally rough surfaces by using the T-matrix method", Proc. SPIE 3503, Microwave Remote Sensing of the Atmosphere and Environment, (19 August 1998); https://doi.org/10.1117/12.319478

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