1. School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China
2. Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing 100081, China
3. National Satellite Ocean Application Service, Beijing 100081, China
4. School of Remote Sensing & Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China