Modeling of the Bistatic Electromagnetic Scattering From Sea Surfaces Covered in Oil for Microwave Applications

Pinel, Nicolas; Dechamps, N.; Bourlier, Christophe

doi:10.1109/tgrs.2007.902412

Cited by 51 publications

(37 citation statements)

References 27 publications

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“…This damping effect is expressed by an attenuation coefficient y [10], which is usually called the Marangoni viscous damping coefficient. For more details, one can refer to [4].…”

Section: Hydrodynamic Modeling Of the Surfaces Of Clean And Contaminamentioning

confidence: 99%

“…Attention is focused here on the case of homogeneous insoluble oil films, which restricts the validity domain of the study to low to moderate wind speeds at 10 meters above the sea surface u 10 less than 8 − 10 m/s [4,5]. The multiple reflections at each interface are ignored (i.e., for both the upper air/oil interface and the lower oil/sea interface for the contaminated case).…”

Section: Introductionmentioning

confidence: 99%

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Unpolarized infrared emissivity of oil films on sea surfaces

Pinel

Bourlier

2009

2009 IEEE International Geoscience and Remote Sensing Symposium

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The unpolarized infrared emissivity of oil films on sea surfaces is derived under the geometric optics approximation. The multiple reflections at each of interface are ignored, but the multiple reflections between the upper and lower interfaces of the oil film are taken into account. The oil film is assumed to be thin, so that the two interfaces can be considered as parallel and identical. Thus, under the geometric optics approximation, the oil film can locally be seen as a Fabry-Pérot interferometer. Thus, the emissivity of the contaminated sea can easily be obtained from the emissivity of the air/oil interface only. Emissivity comparisons between clean and contaminated seas are then presented to study the oil film detectability.

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“…This damping effect is expressed by an attenuation coefficient y [10], which is usually called the Marangoni viscous damping coefficient. For more details, one can refer to [4].…”

Section: Hydrodynamic Modeling Of the Surfaces Of Clean And Contaminamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unpolarized infrared emissivity of oil films on sea surfaces

Pinel

Bourlier

2009

2009 IEEE International Geoscience and Remote Sensing Symposium

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“…withp h,12 (ζ; θ i , r2 ) given by equation (24). Then, for an uncorrelated Gaussian process, and by considering the Smith formulation, according to the authors [15]Ȃ t is given by…”

Section: Calculation Ofī 12 For An Uncorrelated Processmentioning

confidence: 99%

“…This model is independent of the oil layer thickness, and is valid for oil thicknesses of the order of a hundred micrometers to a millimeter. For more details, see [24]. In what follows, we consider a sea covered by an insoluble film of characteristic pulsation ω D = 6 rad/s and a elasticity modulus E 0 = 9 mN/m for the oil slick.…”

Section: Application To Forward Radar Propagation Over Oil Slicks On mentioning

confidence: 99%

Forward Radar Propagation Over Oil Slicks on Sea Surfaces Using the Ament Model With Shadowing Effect

Pinel¹,

Bourlier²,

Saillard³

2007

PIER

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Abstract-This paper is devoted to the forward radar propagation over clean and contaminated seas, using the Ament model and by taking the shadowing effect into account. The well-known Rayleigh parameter, which characterizes the degree of roughness of a corrugated surface for the case of reflection on a rough surface, is presented. Then, it is extended to the transmission through a rough surface, and to the reflection on a layer of two rough interfaces. This extended Rayleigh parameter allows then to calculate the forward radar propagation over oil slicks on sea surfaces, using the Ament model. Moreover, the model is improved by taking the shadowing effect into account. Numerical results of contaminated seas are presented, and compared to that of clean seas.

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“…In order to validate such environmental alterations on measurements, we focus on the study of waves scattering from rough surfaces, in microwaves as well in optics domains. Electromagnetic models [7] for rough surfaces scattering have been developed for several years; however, these models generally consider only a single layer [8,9], that is to say one rough interface. Their extension to multilayer separated by rough interfaces have been studied analytically [10,11]; In this paper, we are interested in a numerical approach, using the hybrid method combining Method of Moments (MOM) with the first-order Kirchhoff approximation (KA) where the multiple scattering phenomenon is neglected.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations Wave Scattering From Two-Layered Rough Interface

Wang¹,

Guo²

2008

PIER B

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Abstract-Method of Moments (MOM) combining with the Kirchhoff Approximation(KA) for analysis of the problem of optical wave scattering by a stack of two one-dimensional Gaussian rough interfaces is solved. The scattered field from the upper interface is solved by MOM and the transmitted field from the lower one is expressed from the Kirchhoff approximation where the multiple scattering phenomenon is neglected. The advantage of this hybrid method is that it is more exact than Kirchhoff approximation. The two rough interfaces separate three lossless and homogeneous media. The bistatic scattered field and the scattering coefficient are derived in this paper for vertical and horizontal polarizations. The influence of the relative permittivity, the height rms and the correlative length, the average heights between the two interfaces on the bistatic scattering coefficient is discussed in detail. The application of this work is the study of electromagnetic modeling of oil slicks on ocean surfaces.

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Modeling of the Bistatic Electromagnetic Scattering From Sea Surfaces Covered in Oil for Microwave Applications

Cited by 51 publications

References 27 publications

Unpolarized infrared emissivity of oil films on sea surfaces

Unpolarized infrared emissivity of oil films on sea surfaces

Forward Radar Propagation Over Oil Slicks on Sea Surfaces Using the Ament Model With Shadowing Effect

Numerical Simulations Wave Scattering From Two-Layered Rough Interface

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