LG-Mod: A Modified Local Gradient (LG) Method to Retrieve SAR Sea Surface Wind Directions in Marine Coastal Areas
Wind directions estimated over a grid of about 4 km × 4 km by the LG-Mod algorithm (red arrows) and the Eta model (yellow arrows). LG-Mod outcomes are shown before (a) and after (b) discharging unreliable estimations by thresholding selection (; °). The processed full-frame TerraSAR-X ScanSAR MDG image was acquired on February 28, 2010, 05:44:48.110, with VV polarization, descending pass, and off-shore Nice (France), and resized to a pixel size of 68 m × 68 m (background).
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