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Electromagnetic scattering of coated objects over sea surface based on SBR-SDFSM

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  • Hua Zhao
  • Lixin Guo
  • Tiange Chen
  • Wei Liu

Abstract

An efficient approach to analyze the electromagnetic (EM) scattering from coated objects above a three-dimensional (3-D) dielectric random rough surface is proposed in this paper. The electric and magnetic current densities on the sea surface are analytically realized using the semi-deterministic facet scattering model (SDFSM). Considering Fresnel reflection coefficient, a scheme combining the shooting and bouncing rays (SBR) and the physical theory of diffraction (PTD) is developed to calculate the scattering of the coated objects. Simulation results obtained with the combined method are verified by comparison with exact simulations using the multilevel fast multiple method (MLFMM). Scattering of large coated objects over sea surface composite model are too large and complex to be calculated using exact methods. With the asymptotic approach in this paper, the scattering performance can be analyzed with rather moderate computational efforts. Numerical results of composite scattering from an electric large three-dimensional model, e.g. an airplane target over a randomly rough surface with Pierson Moskowitz (PM) spectrum are presented and discussed.

Suggested Citation

  • Hua Zhao & Lixin Guo & Tiange Chen & Wei Liu, 2018. "Electromagnetic scattering of coated objects over sea surface based on SBR-SDFSM," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 32(9), pages 1079-1092, June.
    • Handle: RePEc:taf:tewaxx:v:32:y:2018:i:9:p:1079-1092
    DOI: 10.1080/09205071.2017.1417917
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