Here, we present a new method to measure ocean wave slopes in the range direction using dual-polarization SAR image intensity, without need for estimation of the polarization orientation angles. This method is different from those developed by Shuler et al. and Pottier.. In addition, it eliminates the effect of the not well known hydrodynamic modulation on retrieving ocean surface spectra from SAR data Comparisons will be made between ocean wave spectra measured using ENVISAT C band dual-polarization (HH and VV) backscatter data and in situ buoys maintained by NOAA National Data Buoy Center (NDBC). I. INTRODUCTION
['Yijun He', 'William Perrie']
Ocean wave slope spectra extracted by ENVISAT dual-polarization SAR