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Evaluation of a Numerical Modeling Approach based on the Finite Element Method for calculating the Rough Surface Scattering and Emission of a soil layer

hal.structure.identifierÉcologie fonctionnelle et physique de l'environnement [EPHYSE]
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorLAWRENCE, Heather
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorDEMONTOUX, François
hal.structure.identifierÉcologie fonctionnelle et physique de l'environnement [EPHYSE]
dc.contributor.authorWIGNERON, Jean Pierre
hal.structure.identifiersSE 2011
dc.contributor.authorPAILLOU, Philippe
hal.structure.identifierDepartment of Electrical Engineering National Taiwan Ocean University
dc.contributor.authorT.D., Wu
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorKERR, Yann H.
dc.date.created2011-09-01
dc.date.issued2011-09-01
dc.identifier.issn1545-598X
dc.description.abstractEnWe evaluate a new 3-D numericalmodeling approach for calculating the rough-surface scattering and emission of a soil layer. The approach relies on the use of Ansoft's numerical computation software High-Frequency Structure Simulator, which solves Maxwell's equations directly using the finite-element method. The interest of this approach is that it can be easily extended to studies of heterogeneous media. However, before being applied in this way, it must first be validated for the rough-surface case. In this letter, we perform this validation by comparing the results of rough-surface scattering and emission with the results of the method of moments (MoM) for a range of different roughness and permittivity conditions and with both Gaussian and exponential rough-surface autocorrelation functions. For the scattering case, we obtain results that are in agreement with the MoM to within approximately 1-3 dB for angles up to and including 40◦ and 2-4 dB for angles from 50◦ to 70◦. Agreement for emissivity is to within 3.2 and 3.6 K for low and high roughness conditions, respectively. We then illustrate the application of the new approach by calculating the emission of a two-layer system with rough surfaces, representing the soil-litter system in forests.
dc.language.isoen
dc.publisherIEEE - Institute of Electrical and Electronics Engineers
dc.subject.enElectromagnetic scattering by rough surfaces
dc.subject.enmicrowave emissivity
dc.subject.ennumerical simulation
dc.title.enEvaluation of a Numerical Modeling Approach based on the Finite Element Method for calculating the Rough Surface Scattering and Emission of a soil layer
dc.typeArticle de revue
dc.identifier.doi10.1109/LGRS.2011.2131633
dc.subject.halSciences de l'ingénieur [physics]/Electromagnétisme
dc.subject.halPhysique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnement
dc.subject.halSciences de l'environnement/Milieux et Changements globaux
bordeaux.journalIEEE Geoscience and Remote Sensing Letters
bordeaux.pageVol 8 No. 5, p 953-958
bordeaux.volume8
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-00670775
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00670775v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=IEEE%20Geoscience%20and%20Remote%20Sensing%20Letters&rft.date=2011-09-01&rft.volume=8&rft.issue=5&rft.spage=Vol%208%20No.%205,%20p%20953-958&rft.epage=Vol%208%20No.%205,%20p%20953-958&rft.eissn=1545-598X&rft.issn=1545-598X&rft.au=LAWRENCE,%20Heather&DEMONTOUX,%20Fran%C3%A7ois&WIGNERON,%20Jean%20Pierre&PAILLOU,%20Philippe&T.D.,%20Wu&rft.genre=article


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