1. Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University , Nanjing, Jiangsu, China
2. Collaborative Innovation Center of South China Sea Studies, Nanjing University , Nanjing, Jiangsu, China
3. Jiangsu Center for Collaborative Innovation in Novel Software Technology and Industrialization, Nanjing University , Nanjing, Jiangsu, China