Numerical Analysis of Some Scattering Problems in Continuous Random Medium

El-Ocla, Hosam; Tateiba, Mitsuo

doi:10.2528/pier03012302

Cited by 7 publications

(14 citation statements)

References 26 publications

(40 reference statements)

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“…An approach to both issues requires the higher order moment of Green's functions. We have numerically presented some interesting results of the first and second issues (18) (26) . This paper addresses above two issues.…”

Section: Introductionmentioning

confidence: 99%

“…This paper addresses above two issues. To the first issue, numerical results of the backscattering cross section of conducting cylinder are given in detail on the assumption that twice the backscattering enhancement occurs at an infinitesimally thin cylinder, by changing the size and configuration of the cylinder cross-section and the polarization and illumination angle of incident wave (22) (26) . The spatial coherence function that characterizes the SPC incident wave in the neighborhood of the cylinder plays a central role in estimating the backscattering cross-section.…”

Section: Introductionmentioning

confidence: 99%

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Scattering by Conducting Bodies in Random Media

2004

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This paper presents that scattering by a body in a random medium consists of the following two issues; one is scattering of spatially partially coherent wave by the body and the other is coupling between incident and scattered waves through the random medium. Investigating separately each issue makes the scattering more understandable. The numerical analysis of scattered power by conducting cylinders leads to the radar cross-sections quite different from those in free space, under the condition that the radar cross-section of the random medium is negligibly small. The causes of the difference are explained on the basis of above separation of the scattering, and we emphasize that the spatial coherence length of incident wave is one of key parameters for estimating the cross sections.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Scattering by Conducting Bodies in Random Media

2004

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“…Then we can deal with this scattering problem two-dimensionally with assuming horizontal polarization (E-wave incidence). In the previous work [5,7], it has been clarified that the RCS changes obviously with the illumination region curvature. In this study, it is concentrated on the wave backscattering from convex illumination portion only.…”

Section: Introductionmentioning

confidence: 99%

“…Some methods proposed to formulate the scattering wave were presented: examples are in [1][2][3]. In this regard, some years ago, a method has been presented for solving the scattering problem as a boundary value problem [4][5][6][7][8]. This method is characterized by the estimation of the current on the whole surface and not only on the illumination region as in the physical optics method.…”

Section: Introductionmentioning

confidence: 99%

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On Laser Radar Cross Section of Targets With Large Sizes for E-Polarization

El-Ocla¹

2006

PIER

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Abstract-In this paper a study is presented to handle the behavior of radar cross section (RCS) of partially convex targets of large sizes up to five wavelengths in free space. The nature of incident wave is an important factor in the remote sensing and radar detection applications. To investigate the effects of incident wave nature on the RCS, scattering problems of plane and beam wave incidences are considered. Targets are taking large sizes to be bigger enough than the beam width with putting into consideration a horizontal incident wave polarization (E-wave incidence). The effects of the target configuration together with the beam width on the laser RCS compared to the case with the plane wave incidence are numerically analyzed. Therefore, we will be able to have some sort of control on radar detection using beam wave incidence.

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Backscattering of Plane Waves from Conducting Objects in Random Media

El-Ocla

2018

Wiley Encyclopedia of Electrical and Electronics Engineering

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Over the last two decades, accurate methods to calculate the intensity of waves backscattering from conducting objects with arbitrary shape in random media were developed successfully. This allowed researchers to analyze numerically the radar cross section (RCS) considering different parameters, such as the configuration of the object and the effects of medium randomness. Data backscattering from the smooth surface of a conducting concave–convex target reveals the obvious impact of its configuration, including size and curvature index on the behavior of RCS. This requires the investigation of the specular reflections, especially in the case of relatively complex contours. We assume wave propagation and scattering from targets in free space and random medium, while considering linear and circular polarizations of incident waves. In this article, we review the backscattering problem and primarily focus on the plane wave as an ideal incident wave in the far field.

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Numerical Analysis of Some Scattering Problems in Continuous Random Medium

Cited by 7 publications

References 26 publications

Scattering by Conducting Bodies in Random Media

Scattering by Conducting Bodies in Random Media

On Laser Radar Cross Section of Targets With Large Sizes for E-Polarization

Backscattering of Plane Waves from Conducting Objects in Random Media

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