Journal ArticleDOI
The scattering of obliquely incident plane waves from a corrugated conducting surface
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In this paper, a physical optics solution is presented for the scattering of plane waves from a perfectly conducting corrugated surface in the case of waves incident from an arbitrary direction and for an observer far from the surface.Abstract:
A physical optics solution is presented for the scattering of plane waves from a perfectly conducting corrugated surface in the case of waves incident from an arbitrary direction and for an observer far from the surface. This solution is used to compute the radar cross section of the surface in the case of backscatter from irregular (i.e., stochastic) corrugations. An interesting feature of the solution is the occurrence of singularities in the scattered fields. These singularities appear to be a manifestation of focussing by the surface at its "stationary" points. Whether or not the singularities occur in the solution depends on the manner in which one restricts the analysis to the far-field.read more
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Comparison of σ o Obtained from the Conventional Definition with σ o Appearing in the Radar Equation for Randomly Rough Surfaces
TL;DR: In this article, a comparison of the radar cross section of rough surfaces calculated in one case from the conventional definition and obtained in the second case directly from the radar equation is made, where the objective of the analysis is to determine how well the conventional definitions represents the cross section appearing in the radar equations.
References
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Journal ArticleDOI
A note on the theory of scattering from an irregular surface
TL;DR: In this paper, the authors developed integrals from vector field theory for scattering by a perfectly conducting irregular surface at very short wavelengths and showed that the back scattering cross section is proportional to the average number of specular points which are illuminated at a given angle of incidence and the geometric mean of the principal radii of curvature at those points.
Journal ArticleDOI
The scattering of electromagnetic waves by a corrugated sheet
TL;DR: In this paper, the physical optics method is used to determine the scattering of a plane wave by a perfectly conducting sheet having sinusoidal corrugations, and the only approximation concerns the current distribution on the sheet and the scattered field then appears as a spectrum of plane waves whose amplitudes are given by a simple integral expression.