Semi-Empirical Algorithm for Wind Speed Retrieval from Gaofen-3 Quad-Polarization Strip Mode SAR Data

作     者：ZHU Shuai SHAO Weizeng MARINO Armando SUN Jian YUAN Xinzhe ZHU Shuai;SHAO Weizeng;MARINO Armando;SUN Jian;YUAN Xinzhe

作者机构：Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316000China Natural SciencesUniversity of StirlingStirling FK94LAUK Physical Oceanography LaboratoryOcean University of ChinaQingdao 266100China Key Laboratory of Space Ocean Remote Sensing and ApplicationNational Satellite Ocean Application ServiceBeijing 100081China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2020年第19卷第1期

页      面：23-35页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 08[工学] 0816[工学-测绘科学与技术] 0706[理学-大气科学] 

基　　金：supported by the Fundamental Research Funds for Zhejiang Provincial Universities and Research Institutes (No. 2019J00010) the National Key Research and Development Program of China (No. 2017YFA0604901) the National Natural Science Foundation of China (Nos. 41806005 and 41776183) the Public Welfare Technical Applied Research Project of Zhejiang Province of China (No. LGF19D060003) the New- Shoot Talented Man Plan Project of Zhejiang Province (No. 2018R411065) the Science and Technology Project of Zhou- shan City (No. 2019C21008) 

主　　题：wind Gaofen-3 synthetic aperture radar cross-polarization 

摘      要：Synthetic aperture radar(SAR)is a suitable tool to obtain reliable wind retrievals with high spatial *** geophysical model function(GMF),which is widely employed for wind speed retrieval from SAR data,describes the relationship between the SAR normalized radar cross-section(NRCS)at the copolarization channel(vertical-vertical and horizontal-horizontal)and a wind ***-measured NRCS at cross-polarization channels(horizontal-vertical and vertical-horizontal)correlates with wind *** this study,a semi-empirical algorithm is presented to retrieve wind speed from the noisy Chinese Gaofen-3(GF-3)SAR data with noise-equivalent sigma zero correction using an empirical ***-3 SAR can acquire data in a quad-polarization strip mode,which includes cross-polarization *** semi-empirical algorithm is tuned using acquisitions collocated with winds from the European Center for Medium-Range Weather *** particular,the proposed algorithm includes the dependences of wind speed and incidence angle on cross-polarized *** accuracy of SAR-derived wind speed is around 2.10ms−1 root mean square error,which is validated against measurements from the Advanced Scatterometer onboard the Metop-A/B and the buoys from the National Data Buoy Center of the National Oceanic and Atmospheric *** results obtained by the proposed algorithm considering the incidence angle in a GMF are relatively more accurate than those achieved by other *** work provides an alternative method to generate operational wind products for GF-3 SAR without relying on ancillary data for wind direction.