论文信息 - Interpreting Surface Ocean Phenomena Through Quad-Polarized SAR Measurements

Interpreting Surface Ocean Phenomena Through Quad-Polarized SAR Measurements

RADARSAT-2 C-band quad-polarization ocean synthetic aperture radar (SAR) scenes are decomposed into resonant Bragg scattering from regular (no-breaking) surface and scattering from breaking waves. Analysis of the surface current signatures in dual co- and cross-pol SAR images revealed that governing imaging mechanism is modulations of wave breakings which are very sensitive to the presence of current non-uniformities. As found, due to small relaxation scale, short Bragg waves do not "feel" the current. Thus routinely observed current signatures in quad-pol SAR images originate essentially from wave breaking modulations, and modulation of Bragg waves does not matter this issue.

[1] J. Johannessen,et al. On radar imaging of current features: 1. Model and comparison with observations , 2005 .

[2] Bertrand Chapron,et al. On Dual Co-Polarized SAR Measurements of the Ocean Surface , 2013, IEEE Geoscience and Remote Sensing Letters.

[3] J. Johannessen,et al. Quad‐polarization SAR features of ocean currents , 2014 .

[4] William Perrie,et al. A C-band Geophysical Model Function for Determining Coastal Wind Speed Using Synthetic Aperture Radar , 2018, 2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama).