Journal ArticleDOI
Scattering cross sections for composite rough surfaces using the unified full wave approach
Ezekiel Bahar,Mary Ann Fitzwater +1 more
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In this article, the full wave approach is used to derive a unified formulation for the like and cross polarized scattering cross sections of composite rough surfaces for all angles of incidence, and the simplifying assumptions that are common to all the earlier solutions are examined.Abstract:
The full wave approach is used to derive a unified formulation for the like and cross polarized scattering cross sections of composite rough surfaces for all angles of incidence. Earlier solutions for electromagnetic scattering by composite random rough surfaces are based on two-scale models of the rough surface. Thus, on applying a hybrid approach physical optics theory is used to account for specular scattering associated with a filtered surface (consisting of the large sonic spectral components of the surface) while perturbation theory is used to account for Bragg scattering associated with the surface consisting of the small scale spectral components. Since the full wave approach accounts for both specular point scattering and Bragg scattering in a self-consistent manner, the two-scale model of the rough surface is not adopted in this work. These unified full wave solutions are compared with the earlier solutions and the simplifying assumptions that are common to all the earlier solutions are examined. It is shown that while the full wave solutions for the like polarized scattering cross sections based on the two-scale model are in reasonably good agreement with the unified full wave solutions, the two solutions for the cross polarized cross sections differ very significantly.read more
Citations
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Journal ArticleDOI
Review of the full wave solutions for rough surface scattering and depolarization: Comparisons with geometric and physical optics, perturbation, and two-scale hybrid solutions
TL;DR: In this paper, the principal steps in the derivation of the full-wave solutions to problems of scattering and depolarization by irregular layered media are presented, and special consideration is given to scattering by two-dimensional random rough surfaces of finite conductivity.
Journal ArticleDOI
Full wave solutions for rough-surface bistatic radar cross sections: Comparison with small perturbation, physical optics, numerical, and experimental results
Ezekiel Bahar,Bom Son Lee +1 more
TL;DR: In this paper, the authors derived full wave solutions for the like-and cross-polarized electromagnetic fields diffusely scattered by two-dimensional rough surfaces and used them to obtain the random rough-surface cross sections.
Journal ArticleDOI
Like- and cross-polarized scattering cross sections for random rough surfaces: theory and experiment
Ezekiel Bahar,Mary Ann Fitzwater +1 more
TL;DR: In this article, the unified full-wave solutions for the vertically and horizontally polarized scattered radiation fields and the like-and cross-polarized scattering cross sections for random rough surfaces are compared with the corresponding physical-optics, geometricoptics and perturbation solutions that are obtained on adopting a two-scale model of the composite rough surface.
Journal ArticleDOI
Full wave analysis for rough surface diffuse, incoherent radar cross sections with height-slope correlations included
TL;DR: In this article, the bistatic scattering cross sections for rough one-dimensional perfectly conducting surfaces using the full wave approach were derived, and correlations between the rough surface heights and slopes were accounted for in the analysis.
Journal ArticleDOI
Depolarization and backscatter enhancement in light scattering from random rough surfaces: comparison of full-wave theory with experiment
Ezekiel Bahar,Mary Ann Fitzwater +1 more
TL;DR: Mendez and O'Donnell as mentioned in this paper used the full-wave approach to interpret the recently observed depolarization and enhanced backscattering of light from random rough surfaces fabricated in photoresist with an aluminum overcoating.
References
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Journal ArticleDOI
The statistical analysis of a random moving surface
TL;DR: In this article, the authors derived the probability distribution of the surface elevation and of the magnitude and orientation of the gradient for a random, moving, Gaussian surface, and the average number of zero-crossings per unit distance along a line in an arbitrary direction.
Journal ArticleDOI
Equations for Calculating the Dielectric Constant of Saline Water (Correspondence)
TL;DR: In this article, the dielectric constant of saline water was represented by an equation of the Debye form and the parameters for the parameters were given as functions of the water temperature and salinity.
Journal ArticleDOI
A new model for sea clutter
TL;DR: In this article, first-order scattering theory is applied to obtain sea clutter cross sections in terms of mean-squared height spectrum of the sea surface, and the results are in remarkably good agreement with observations for vertical polarization at P-, L-, C-, and X -bands.
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Backscattering from a Gaussian-distributed perfectly conducting rough surface
TL;DR: In this article, an analytical approach to the problem of scattering by composite random surfaces is presented, where the surface is assumed to be Gaussian so that the surface height can be split (in the mean-square sense) into large and small scale components relative to the electromagnetic wavelength, and a first-order perturbation approach developed by Burrows is used wherein the scattering solution for the large-scale structure is perturbed by the small-scale diffraction effects.