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Communication dans un congrès

Study of Sensitivity In Wind Direction Retrieval From Sentinel-1 Images

Ali Khenchaf 1, 2 Carole Nahum 3 Fabrice Comblet 1, 2 Tran Vu La 1, 2
1 Lab-STICC_ENSTAB_MOM_PIM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
2 Pôle STIC_REMS
ENSTA Bretagne - École Nationale Supérieure de Techniques Avancées Bretagne
Abstract : Retrieval of sea wind vector from Synthetic Aperture Radar (SAR) data is one of the most widely used methods, since it can give high wind resolution cell. For this approach, wind direction is normally the first retrieved parameter, since it plays a crucial role in many inversion models (CMOD, XMOD) to estimate wind speed. In spite of the huge studies of wind field retrieval, little has been reported about the sensitivity of wind direction retrieval at different scales, especially at a wind resolution cell of 1 km × 1 km. This is particularly significant for C-band Sentinel-1 images which have generally high spatial resolutions. In order to investigate this issue, the Local Gradient method is selected to retrieve wind directions from the Sentinel-1 data at different scales, with regard to the spatial resolution (or acquisition mode) of SAR images, speckle noise, and wind regimes.
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Communication dans un congrès
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https://hal.archives-ouvertes.fr/hal-01653362
Contributeur : Annick Billon-Coat <>
Soumis le : vendredi 1 décembre 2017 - 13:28:10
Dernière modification le : mercredi 24 juin 2020 - 16:19:51

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Ali Khenchaf, Carole Nahum, Fabrice Comblet, Tran Vu La. Study of Sensitivity In Wind Direction Retrieval From Sentinel-1 Images. ATSIP 2016, Mar 2016, Monastir, Tunisia. ⟨10.1109/ATSIP.2016.7523148⟩. ⟨hal-01653362⟩

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