中国物理B ›› 2006, Vol. 15 ›› Issue (8): 1755-1765.doi: 10.1088/1009-1963/15/8/021

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Electromagnetic scattering from two parallel 2D targets arbitrarily located in a Gaussian beam

王运华, 郭立新, 吴　琼   

  1. School of Science, Xidian University, Xi'an 710071, China
  • 收稿日期:2006-01-11 修回日期:2006-02-10 出版日期:2006-08-20 发布日期:2006-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60571058), the National Defense Foundation of China and Graduate Innovation Fund, Xidian University.

Electromagnetic scattering from two parallel 2D targets arbitrarily located in a Gaussian beam

Wang Yun-Hua(王运华)†, Guo Li-Xin(郭立新), and Wu Qiong(吴琼)   

  1. School of Science, Xidian University, Xi'an 710071, China
  • Received:2006-01-11 Revised:2006-02-10 Online:2006-08-20 Published:2006-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60571058), the National Defense Foundation of China and Graduate Innovation Fund, Xidian University.

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摘要： In this paper based on the equivalence principle and the reciprocity theorem, the scattered field up to second-order by two parallel 2D targets arbitrarily located in a Gaussian beam is considered. The first-order solution can easily be obtained by calculating the scattered field from isolated targets when illuminated by a Gaussian beam. However, because of the difficulty in formulating the couple scattering field, it is almost impossible to find an analytical solution for the second-order scattered field if the shapes of 2D targets are not canonical geometries. In order to overcome this problem, in this paper, the second-order solution is derived by using the technique based on the reciprocity theorem and the equivalence principle. Meanwhile, the relation between the secondary scattered field from target #1 and target {\#}2 is obtained. Specifically, the bi- and mono-static scattering of Gaussian beam by two parallel adjacent inhomogeneous plasma-coated conducting circular cylinders is calculated and the dependence of attenuation of the scattering width on the thickness of the coated layer, electron number density, collision frequency and radar frequency is discussed in detail.

关键词: reciprocity theorem, equivalence theorem, electromagnetic scattering, inhomogeneous plasma-coated conducting cylinders, Gaussian beam

Abstract: In this paper based on the equivalence principle and the reciprocity theorem, the scattered field up to second-order by two parallel 2D targets arbitrarily located in a Gaussian beam is considered. The first-order solution can easily be obtained by calculating the scattered field from isolated targets when illuminated by a Gaussian beam. However, because of the difficulty in formulating the couple scattering field, it is almost impossible to find an analytical solution for the second-order scattered field if the shapes of 2D targets are not canonical geometries. In order to overcome this problem, in this paper, the second-order solution is derived by using the technique based on the reciprocity theorem and the equivalence principle. Meanwhile, the relation between the secondary scattered field from target #1 and target #2 is obtained. Specifically, the bi- and mono-static scattering of Gaussian beam by two parallel adjacent inhomogeneous plasma-coated conducting circular cylinders is calculated and the dependence of attenuation of the scattering width on the thickness of the coated layer, electron number density, collision frequency and radar frequency is discussed in detail.

Key words: reciprocity theorem, equivalence theorem, electromagnetic scattering, inhomogeneous plasma-coated conducting cylinders, Gaussian beam

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
52.35.Hr (Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid)) 52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?)