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Sun glitter imagery of ocean surface waves. Part 1: Directional spectrum retrieval and validation ArchiMer
Kudryavtsev, Vladimir; Yurovskaya, Maria; Chapron, Bertrand; Collard, Fabrice; Donlon, Craig.
A practical method is suggested to quantitatively retrieve directional spectra of ocean surface waves from high-resolution satellite sun glitter imagery (SSGI). The method builds on direct determination of the imaging transfer function from the large-scale smoothed shape of sun glitter. Observed brightness modulations are then converted into sea surface elevations to perform directional spectral analysis. The method is applied to the Copernicus Sentinel-2 Multi-Spectral Instrument (MSI) measurements. Owing to the specific instrumental configuration of MSI (which has a primary mission dedicated to mapping of land surfaces), a physical angular difference between channel detectors on the instrument focal plane array can be used to efficiently determine the...
Tipo: Text Palavras-chave: Satellite sun glitter imagery; Ocean surface waves; 2-D spectra retrieval.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00381/49280/49678.pdf
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