1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2. School of Automation, Nanjing University of Information Science & Technology, Nanjing 210044, China
3. School of Software, Nanjing University of Information Science & Technology, Nanjing 210044, China
4. China Centre for Resources Satellite Data and Application, Beijing 100094, China
5. School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China