中国物理B ›› 2011, Vol. 20 ›› Issue (5): 50202-050202.doi: 10.1088/1674-1056/20/5/050202

• GENERAL • 上一篇    下一篇

Electromagnetic scattering from two-layered rough interfaces with a PEC object: vertical polarization

王安琪, 郭立新, 柴草   

  1. School of Science, Xidian University, Xi'an 710071, China
  • 收稿日期:2010-07-07 修回日期:2011-01-17 出版日期:2011-05-15 发布日期:2011-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60971067), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20100203110016), and the Fundamental Research Funds for the Central Un

Electromagnetic scattering from two-layered rough interfaces with a PEC object: vertical polarization

Wang An-Qi(王安琪)†, Guo Li-Xin(郭立新), and Chai Cao(柴草)   

  1. School of Science, Xidian University, Xi'an 710071, China
  • Received:2010-07-07 Revised:2011-01-17 Online:2011-05-15 Published:2011-05-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60971067), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20100203110016), and the Fundamental Research Funds for the Central Universities, China (Grant No. K50510070001).

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摘要： Electromagnetic (EM) scattering from a stack of two rough interfaces separating a homogeneous medium with a perfectly electric conducting (PEC) object has been calculated through the method of moments for vertical polarization. Theoretical formulations of EM scattering from multi-layered rough interfaces with a PEC object have been derived in detail and the total fields and their normal derivatives on the rough interfaces are solved. The two-layered model is a special case. In this work, a Gaussian rough surface was applied to simulate the rough interface. A cylinder was located above, between or below the two-layered rough interfaces. Through numerical simulations, the validity of this work is demonstrated by comparing it with existing scattering models, which are special cases that include a PEC object located above/below a single-layered rough interface and two-layered rough interfaces without an object. Subsequently, the influences of characteristic parameters, such as the relative permittivity of the medium, as well as the average height between the two rough surfaces, on the bistatic scattering coefficient are discussed.

Abstract: Electromagnetic (EM) scattering from a stack of two rough interfaces separating a homogeneous medium with a perfectly electric conducting (PEC) object has been calculated through the method of moments for vertical polarization. Theoretical formulations of EM scattering from multi-layered rough interfaces with a PEC object have been derived in detail and the total fields and their normal derivatives on the rough interfaces are solved. The two-layered model is a special case. In this work, a Gaussian rough surface was applied to simulate the rough interface. A cylinder was located above, between or below the two-layered rough interfaces. Through numerical simulations, the validity of this work is demonstrated by comparing it with existing scattering models, which are special cases that include a PEC object located above/below a single-layered rough interface and two-layered rough interfaces without an object. Subsequently, the influences of characteristic parameters, such as the relative permittivity of the medium, as well as the average height between the two rough surfaces, on the bistatic scattering coefficient are discussed.

Key words: composite scattering, two-layered rough interfaces, electromagnetic wave scattering, method of moments

中图分类号:  (Numerical differentiation and integration)

  • 02.60.Jh
41.20.Jb (Electromagnetic wave propagation; radiowave propagation) 43.30.Hw (Rough interface scattering)