Backscatter and Doppler signals of surface current in SAR images: A step towards inverse modeling

Conference: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
05/16/2006 - 05/18/2006 at Dresden, Germany

Proceedings: EUSAR 2006

Pages: 4Language: englishTyp: PDF

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Authors:
Johannessen, Johnny A.; Dagestad, Knut-Frode (Nansen Environmental and Remote Sensing Center, Bergen, Norway)
Kudryavtsev, Vladimir; Akimov, Dmitry (Nansen International Environmental and Remote Sensing Center, St. Petersburg, Russia)
Chapron, Bertrand (Institute Francais de Recherche pour l┬┤Exploitation de la Mer, Plouzane, France)
Collard, Fabrice (BOOST Technologies, Brest, France)

Abstract:
In this paper we present and examine the preliminary results obtained with a new combined Doppler method and radar interaction model (DopRim), which also features an independent wind-wave SAR retrieval tool. Forward simulations of SAR images using this DopRim model have been conducted for test areas around the French coast. The 3D current fields are taken from numerical ocean models, while the wind and dominant wave field are retrieved from the SAR images. These products serve as the input for the forward DopRim module. Preliminary results are used to compare measured and simulated Doppler velocities in consistence with the SAR backscatter anomalies, near surface wind and wave fields and surface current.