Scattering by a finite set of perfectly conducting cylinders buried in a dielectric half-space: a spectral-domain solution

Abstract

An analytical-numerical technique, for the solution of\ud the two-dimensional electromagnetic plane-wave scattering by a finite\ud set of perfectly conducting circular cylinders buried in a dielectric\ud half-space, is presented. The problem is solved for both the\ud near- and the far-field regions, for TM and TE polarizations. The\ud diffracted field is represented in terms of a superposition of cylindrical\ud waves and use is made of the plane-wave spectrum to take\ud into account the reflection and transmission of such waves by the\ud interface. The validity of the approach is confirmed by comparisons\ud with results available in the literature, with very good agreement.\ud The multiple interactions between two buried cylinders have\ud been studied by considering both the induced currents and the scattered\ud field diagrams. Applications of the method to objects of arbitrary\ud cross-section simulated by a suitable configuration of circular\ud cylinders are shown

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A Cwa-Based Detection Procedure of a Perfectly-Conducting Cylinder Buried in a Dielectric Half-Space

“…The two-dimensional electromagnetic scattering problem by buried circular cylinders has been discussed by many authors, both from a theoretical and a numerical point of view, due to its application to remote sensing of the earth's subsurface, to the detection of landmines, pipes, conduits, or to communication through the earth [1][2][3][4][5][6].…”

“…In [6], the plane-wave scattering problem by a finite set of perfectly-conducting cylinders buried in a dielectric half-space was considered. We developed a Cylindrical-Wave Approach (CWA), in which the field scattered by the cylinders is decomposed in cylindrical waves.…”

“…All the multiple reflections between the cylinders and the interface are taken into account. It is noted that the CWA can be employed to characterize two-dimensional obstacles of arbitrary shape simulated by a suitable array of circular cylinders [6,18].…”