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| HAL : hal-00509653, version 1 |
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| 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, WASHINGTON DC : United States (2010) |
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| L-Band emission of rough surfaces: comparison between experimental data and different modeling approaches |
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Heather Lawrence 1François Demontoux 1 |
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| (04/03/2010) |
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| In this paper we present a study of a numerical modeling approach based on the Finite Element Method (FEM) for the prediction of rough surface emission at L-band, including a comparison with other modeling approaches and experimental data. The numerical approach relies on the use of ANSYS' numerical computation software HFSS (High Frequency Structure Simulator), which in turn solves Maxwell's equations directly using the Finite Element Method. It is useful in the context of the SMOS (Soil Moisture and Ocean Salinity) mission since it can be extended to model the scattering and emission of heterogeneous media including complex multilayer systems such as the radiometric L-band emission of soil and litter layers in forests. In this paper we firstly validate the approach by comparing predictions of rough surface scattering against the Method of Moments (MoM). Secondly we study the accuracy of the numerical approach by comparing results of rough surface emissivity against measurements and predictions of the Advanced Integral Equation Method (AIEM). |
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| 1 : | Laboratoire de l'intégration, du matériau au système (IMS) |
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CNRS : UMR5218 – Université Sciences et Technologies - Bordeaux I – Institut Polytechnique de Bordeaux |
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| 2 : | Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263) |
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Institut national de la recherche agronomique (INRA) : UR1263 |
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| 3 : | Centre d'études spatiales de la biosphère (CESBIO) |
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CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| 4 : | Department of Electrical Engineering National Taiwan Ocean University |
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Keelung University |
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| 5 : | Radiophysics of remote sensing laboratory |
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Kirensky Institute of Physics |
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| 6 : | Institue for Computational Earth System Science |
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University of California, Santa Barbara |
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| Domaine | : | Sciences de l'ingénieur/Electromagnétisme Planète et Univers/Interfaces continentales, environnement Sciences de l'environnement/Milieux et Changements globaux |
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| Electromagnetic scattering by rough surfaces – microwave emissivity – numerical simulation – SMOS mission – soil-litter structures |
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| hal-00509653, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00509653 | |
| oai:hal.archives-ouvertes.fr:hal-00509653 | |
| Contributeur : François Demontoux | |
| Soumis le : Vendredi 13 Août 2010, 18:14:03 | |
| Dernière modification le : Vendredi 13 Août 2010, 18:14:03 | |
