1. Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
2. Institute of Image Processing and Pattern Recognition, School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
5. State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China