Electromagnetic interactions analysis between tow 3-D scatteres using the e-pilemethod combined with the po approximation
Date
2014-01-29
Authors
Kouali, Mohammad
Kubicke, Gildas
Bourlier, Christophe
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Abstract
In this paper, the electromagnetic scattering from two scatterers is analyzed from a rigorous
integral formulation solved by the method of moments (MoM). G. Kubick¶e has recently developed the E-
PILE (Extended Propagation-Inside-Layer Expansion) method to calculate the scattering from an object
above a rough surface for a two-dimensional problem. This method allows us to calculate separately
and exactly the interactions between the object and the rough surface. The purpose of this paper is
to extend the E-PILE method to a three-dimensional problem. Such a 3-D problem involves a large
number of unknowns and can not be solved easily with a conventional method of moments by using a
direct LU inversion. Thus to solve this issue, the E-PILE method is combined with the physical optics
(PO) approximation to calculate the local interactions on both the object and the rough surface. By
using this hybrid method, the requirements of memory and CPU time can be reduced signi¯cantly.