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We propose two new analytical polarization ratio (PR) models based on the RADARSAT-2 Quad-Polarization (HH+VV+HV+VH) observations over the ocean. One is a function of incidence angle only and the other has additional dependence on wind speed. Comparisons are presented with theoretical and empirical PR models from the literature. The new PR model with wind speed and incidence angle dependence is shown...
Ocean wind speeds and wind directions are estimated simultaneously using the normalized radar cross sections corresponding to two neighboring images, having slightly different incidence angles. The wind direction ambiguity is removed by using the direction closest to that given by the buoy or some other determination. To validate this method, some ENVISAT ASAR images of the Gulf of Mexico and coastal...
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