Simulation of radar backscatter and Doppler shifts of wave-current interaction in the presence of strong tidal current

Type Publication
Publication date 2012-05
Language English
Copyright 2012 Elsevier Inc. All rights reserved.
Author(s) Hansen M. W.1, Kudryavtsev V.1, 2, 3, Chapron Bertrand4, Johannessen J. A.1, 5, Collard Fabrice6, Dagestad K. -F.1, Mouche Alexis6
Affiliation(s) 1 : Nansen Environm Remote Sensing Ctr, NO-5006 Bergen, Norway.
2 : Nansen Int Environm & Remote Sensing Ctr, St Petersburg, Russia.
3 : Inst Marine Hydrophys, Sevastopol, Ukraine.
4 : IFREMER, Plouzane, France.
5 : Univ Bergen, Inst Geophys, N-5020 Bergen, Norway.
6 : Collecte Localisat Satellites, Direct Radar Applicat, Plouzane, France.
Source Remote Sensing Of Environment (0034-4257) (Elsevier Science Inc), 2012-05 , Vol. 120 , P. 113-122
DOI 10.1016/j.rse.2011.10.033
WOS© Times Cited 9
Keyword(s) SAR, Tidal current, Waves, Normalized radar cross section, Doppler velocity
Abstract A radar imaging model including a Doppler shift module is presented for quantitative studies of radar observations of wave-current interaction in a strong tidal current regime. The model partitions the Doppler shift into the relative contribution arising from the motion of the backscattering facets including Bragg waves, specular points, and breaking waves that are advected by and interact with the underlying surface current. Simulated and observed normalized radar cross sections and Doppler shifts for different environmental conditions and radar parameters are compared and discussed. (C) 2012 Elsevier Inc. All rights reserved.
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Hansen M. W., Kudryavtsev V., Chapron Bertrand, Johannessen J. A., Collard Fabrice, Dagestad K. -F., Mouche Alexis (2012). Simulation of radar backscatter and Doppler shifts of wave-current interaction in the presence of strong tidal current. Remote Sensing Of Environment, 120, 113-122. Publisher's official version : http://doi.org/10.1016/j.rse.2011.10.033 , Open Access version : http://archimer.ifremer.fr/doc/00083/19438/