1. College of Oceanography and Space Informatics, China University of Petroleum (East China), Qingdao, China
2. Laboratory of Marine Physics and Remote Sensing, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China
3. College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, China
4. College of Engineering, Ocean University of China, Qingdao, China