Polarimetric scattering theory for high slope rough surface - Summary

The small perturbations method has been extensively used for waves scattering by rough surfaces. The standard method developped by Rice is difficult to apply when we consider second and third order of scattered fields as a function of the surface height. Calculations can be greatly simplified with the use of reduced Rayleigh equations, because one of the unknown fields can be eliminated. We derive a new set of four reduced equations for the scattering amplitudes, which are applied to the cases of a rough conducting surface, and to a slab where one of the boundary is a rough surface. As in the one-dimensional case, numerical simulations show the appearance of enhanced backscattering for these structures.

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“…Following Ishimaru et al 28 , we define the Mueller matrix cross section per unit area σ = (σ ij ) :…”

Section: The Mueller Matrix Cross Section and The Surface Statisticmentioning

confidence: 99%

Application of reduced Rayleigh equations to electromagnetic wave scattering by two-dimensional randomly rough surfaces

Soubret

Berginc²,

Bourrely

2001

Phys. Rev. B

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“…But, for many practical applications, approximate solutions are sufficient [15][16][17]. In the field of radar remote sensing, various approximate methods for wave scattering at rough surfaces have been developed [18,19]. Among these solutions, the most common approximate method has been the Kirchhoff approximation (KA).…”

Section: Scattered Fields Calculationmentioning

confidence: 99%

A New Method to Extract the Polarimetric Parameters in Imaging Radars

Zakeri¹,

Ghorbani²,

Davar³

2008

PIER

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Abstract-In this paper, a statistical approach to evaluate randomly rough surfaces (RRS) in an inverse scattering problem is presented. Whereas in these investigations the roughness criterions possess random variables, the use of deterministic techniques such as the target decomposition (TD) can not be useful by itself as a tool of analysis. In these conditions, a statistical approach is essentially required to evaluate the target parameters. The goal of this study is the estimation of the polarimetric signatures, such as the scattering mechanism α and the entropy H, via a novel approach including the combination of TD and a new statistical model. To validate our work, SAR data sets, provided by the European Space Agency (ESA), are analyzed and compared with the simulation results.

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“…Although the Bragg theory has successfully explained the sea surface scattering in small and moderate incidence angles [7,[9][10][11][12][13][14], some discrepancies between the predictions and the experiment observations are still observed. According to the experimental data obtained in different sea environments, it was suggested the super events are closely related to the non-Bragg scattering attributed from the breaking waves [15,16] The scattering of the one-dimensional (1-D) breaking waves, which was generated with the LONGTANK, was combined with the sea surface [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Composite Scattering of Ship on Sea Surface With Breaking Waves

Min¹,

Luo²,

Luo³

et al. 2012

PIER

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Abstract-The composite backscattering of the ship model on sea surface is investigated with the spilling breaking waves and ship bow waves. The spilling breakers are approximately modeled with the wedge-like waves, and the ship bow waves are simulated based on the Kelvin model. With the modified four-path model, each scattering component is evaluated with the high frequency approximation methods for the total composite scattering. Due to the volume scattering, the composite scattering at large incidence angles is strongly enhanced by the non-Bragg scattering. The relationship of the composite scattering and the ship motion is analyzed. The numerical results of sea surface scattering agree with the measured data well, and the complex physical mechanism of the low-grazing-angle composite scattering is explicitly evaluated in this paper.

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Polarimetric scattering theory for high slope rough surface - Summary

Cited by 22 publications

References 0 publications

Application of reduced Rayleigh equations to electromagnetic wave scattering by two-dimensional randomly rough surfaces

Application of reduced Rayleigh equations to electromagnetic wave scattering by two-dimensional randomly rough surfaces

A New Method to Extract the Polarimetric Parameters in Imaging Radars

Composite Scattering of Ship on Sea Surface With Breaking Waves

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