Distribution characteristic of scattering field for an ellipsoidal target irradiated by an electromagnetic wave from an arbitrary direction
Li Ying-Le(李应乐)a)†, Huang Ji-Ying(黄际英)b), Wang Ming-Jun(王明军)a), and Zhang Jia-Tian(张家田)c)
a Institute of Electromagnetic Wave Propagation & Scattering, Xianyang Normal University, Xianyang 712000, China; bSchool of Science, Xidian University, Xian 710071, China; cSchool of Electric Engineering, Xian Shiyou University, Xian 710071, China
Abstract It is of great importance for engineering applications to obtain the expression of scattering field for an ellipsoidal target irradiated by an electromagnetic wave from an arbitrary direction. Literature relevant to this problem is seldom found. In this paper, the scattering field for an ellipsoidal target is presented by utilizing the scale transformation of electromagnetic field and the rotation of coordinate system, with an electromagnetic wave projecting on the target from an arbitrary direction. The obtained result is in good agreement with the solution available from the literature if we consider the scale factors to be unity. Taking a conducting ellipsoidal target for sample, we perform the partial simulations of the ellipsoidal model and a plant leaf model by choosing different scale factors. The obtained results show that the distribution characteristic of scattering field is sensitively affected by the polarization of the incident wave and varies not much with the incident wave angle but changes with the observation point. At some points the scattering energy arrives at its maximum.
Received: 06 November 2007
Revised: 04 May 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60741003), the Natural
Science Foundation of Shaanxi Province, China (Grant No 2005A10) and
the Natural Science Foundation of Shaanxi Education Office, China
(Grant No 06JK162
Cite this article:
Li Ying-Le(李应乐), Huang Ji-Ying(黄际英), Wang Ming-Jun(王明军), and Zhang Jia-Tian(张家田) Distribution characteristic of scattering field for an ellipsoidal target irradiated by an electromagnetic wave from an arbitrary direction 2008 Chin. Phys. B 17 3394
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