Ocean wave parameters retrieved directly from compact polarimetric SAR data

作     者：Yu Liu Yijun He Biao Zhang Yu Liu;Yijun He;Biao Zhang

作者机构：School of Electronic and Information EngineeringNanjing University of Information Science&TechnologyNanjing 210044China School of Marine ScienceNanjing University of Information Science&TechnologyNanjing 210044China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2022年第41卷第4期

页      面：129-137页

核心收录：

学科分类：08[工学] 0816[工学-测绘科学与技术] 

基　　金：The National Natural Science Foundation of China under contract Nos 41620104003 and 42027805 the National Key Research and Development Program under contract No.2016YFC1401002 

主　　题：RADARSAT-2 CP SAR wave parameters wave slope spectrum 

摘      要：We aim to directly invert wave parameters by using the data of a compact polarimetric synthetic aperture radar(CP SAR)and validate the effectiveness of ocean wave parameter retrieval from the circular transmit/linear receive mode andπ/4 compact polarimetric *** data from the RADARSAT-2 fully polarimetric SAR on the C-band were used to obtain the compact polarimetric SAR images,and a polarimetric SAR wave retrieval algorithm was used to verify the sea surface wave *** the data and algorithm,there is no need to estimate complex hydrodynamic modulation transfer functions,even at large radar incidence ***,the radar backscattering cross-sections and backscattering cross-section of the radar linearly polarized with any polarization orientation angle were calculated in the two compact polarimetric SAR ***,the wave slopes along the azimuth direction and the range direction were calculated directly using CP SAR ***,we obtained the slope spectrum of the wave from the estimated wave slopes along azimuth and range *** wave parameters extracted from the synthetic wave slope spectrum were compared with those obtained from buoy observations of the National Data Buoy Center,verifying a suitable agreement.