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Chin. Phys. B, 2008, Vol. 17(10): 3696-3703    DOI: 10.1088/1674-1056/17/10/027
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Solution of scattering from rough surface with a 2Dtarget above it by a hybrid method based on the reciprocity theorem and the forward--ackward method

Wang Yun-Hua(王运华)a), Zhang Yan-Min(张彦敏)b), He Ming-Xia(贺明霞)b), and Guo Li-Xin(郭立新)c)
a Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003, China; b Department of Physics, Ocean University of China, Qingdao 266100, China; c School of Science, Xidian University, Xi'an 710071, China
Abstract  This paper proposes a hybrid method based on the forward--backward method (FBM) and the reciprocity theorem (RT) for evaluating the scattering field from dielectric rough surface with a 2D target above it. Here, the equivalent electric/magnetic current densities on the rough surface as well as the scattering field from it are numerically calculated by FBM, and the scattered field from the isolated target is obtained utilizing the method of moments (MOM). Meanwhile, the rescattered coupling interactions between the target and the surface are evaluated employing the combination of FBM and RT. Our hybrid method is first validated by available MOM results. Then, the functional dependences of bistatic and monostatic scattering from the target above rough surface upon the target altitude, incident and scattering angles are numerically simulated and discussed. This study presents a numerical description for the scattering mechanism associated with rescattered coupling interactions between a target and an underlying randomly rough surface.
Keywords:  forward--backward method      reciprocity theorem      2D target      rough surface      scattering  
Received:  23 November 2007      Revised:  10 March 2008      Accepted manuscript online: 
PACS:  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60571058) and the National Defense Foundation of China.

Cite this article: 

Wang Yun-Hua(王运华), Zhang Yan-Min(张彦敏), He Ming-Xia(贺明霞), and Guo Li-Xin(郭立新) Solution of scattering from rough surface with a 2Dtarget above it by a hybrid method based on the reciprocity theorem and the forward--ackward method 2008 Chin. Phys. B 17 3696

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