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Chin. Phys. B, 2008, Vol. 17(7): 2491-2498    DOI: 10.1088/1674-1056/17/7/024
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Investigation on electromagnetic scattering from rough soil surface of layered medium using the small perturbation method

Ren Xin-Cheng(任新成)a)b) and Guo Li-Xin(郭立新)a)
a School of Science, Xidian University, Xi'an 710071, China; b College of Physics and Electronic Information, Yanan University, Yan'an 716000, China
Abstract  Electromagnetic scattering from a rough surface of layered medium is investigated, and the formulae of the scattering coefficients for different polarizations are derived using the small perturbation method. A rough surface with exponential correlation function is presented for describing a rough soil surface of layered medium, the formula of its scattering coefficient is derived by considering the spectrum of the rough surface with exponential correlation function; the curves of the bistatic scattering coefficient of HH polarization with variation of the scattering angle are obtained by numerical calculation. The influence of the permittivity of layered medium, the mean layer thickness of intermediate medium, the roughness surface parameters and the frequency of the incident wave on the bistatic scattering coefficient is discussed. Numerical results show that the influence of the permittivity of layered medium, the mean layer thickness of intermediate medium, the rms and the correlation length of the rough surface, and the frequency of the incident wave on the bistatic scattering coefficient is very complex.
Keywords:  electromagnetic scattering      rough soil surface with exponential correlation function      layered medium      the small perturbation method  
Received:  22 March 2007      Revised:  03 March 2008      Accepted manuscript online: 
PACS:  93.85.-q (Instruments and techniques for geophysical research: Exploration geophysics)  
  91.60.Pn (Magnetic and electrical properties)  
  91.60.Qr (Wave attenuation)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60571058), the Specialized Research Fund for the Doctoral Program of Higher Education Institutions of China (Grant No 20070701010).

Cite this article: 

Ren Xin-Cheng(任新成) and Guo Li-Xin(郭立新) Investigation on electromagnetic scattering from rough soil surface of layered medium using the small perturbation method 2008 Chin. Phys. B 17 2491

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