Directional ocean wave spectra extracted from the dual-polarization SAR imagery

Lin Ren; Jingsong Yang; Juan Wang; Gang Zheng; Peng Chen; Jianyu Chen

doi:10.1117/12.2028517

16 October 2013 Directional ocean wave spectra extracted from the dual-polarization SAR imagery

Lin Ren, Jingsong Yang, Juan Wang, Gang Zheng, Peng Chen, Jianyu Chen

Proceedings Volume 8888, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2013; 88880O (2013) https://doi.org/10.1117/12.2028517
Event: SPIE Remote Sensing, 2013, Dresden, Germany

Abstract

A new method is proposed to extract the directional ocean wave spectra from the dual-polarization SAR imagery. Firstly, a new SAR - ocean transform is constructed by combining the quasi-linear transforms of the dual-polarization image spectra and cross spectra. The modulation transfer function (MTF) of the transform depends only on the tilt MTF. The uncertainty of MTFs in hydrodynamic and velocity bunching modulation can’t bring extra errors. Secondly, the 180° ambiguity of wave spectra is removed by the imaginary part of dual-polarization cross spectra. Finally, Radarsat-2 quad-polarization SAR imagery was collected to validate the performance. The extracted wave parameters are compared with the ones from buoy. Comparisons preliminarily show the potential of wave spectra extraction from dual-polarization SAR imagery. More cases will be studied.

Citation Download Citation

Lin Ren, Jingsong Yang, Juan Wang, Gang Zheng, Peng Chen, and Jianyu Chen "Directional ocean wave spectra extracted from the dual-polarization SAR imagery", Proc. SPIE 8888, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2013, 88880O (16 October 2013); https://doi.org/10.1117/12.2028517

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