1. Key Lab for Resources Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
3. International Centre on Space Technologies for Natural and Cultural Heritage (HIST) UNESCO, Beijing 100094, China
4. College of Information Science and Engineering, Shandong Agricultural University, Taian 271000, China