Abstract A current based hybrid method (HM) is proposed which combines the method of moment (MOM) with the Kirchhoff approximation (KA) for the analysis of scattering interaction between a two-dimensional (2D) infinitely long conducting target with arbitrary cross section and a one-dimensional (1D) Gaussian rough surface. The electromagnetic scattering region in the HM is split into KA region and MOM region. The electric field integral equation (EFIE) in MOM region (target) is derived, the computational time of the HM depends mainly on the number of unknowns of the target. The bistatic scattering coefficient for the infinitely long cylinder above the rough surface with Gaussian roughness spectrum is calculated, and the numerical results are compared and verified with those obtained by the conventional MOM, which shows the high efficiency of the HM. Finally, the influence of the size, location of the target, the rms height and correlation length of the rough surface on the bistatic scattering coefficient with different polarizations is discussed in detail.
Received: 09 January 2008
Revised: 10 November 2008
Accepted manuscript online:
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, China.
Cite this article:
Wang Rui(王蕊), Guo Li-Xin(郭立新), Ma Jun(麻军), and Wu Zhen-Sen(吴振森) Hybrid method for investigation of electromagnetic scattering from conducting target above the randomly rough surface 2009 Chin. Phys. B 18 1503
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