1. School of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, China;
2. China Academy of Aerospace Science and Innovation, Beijing, China;
3. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing, China;
4. Ministry of Ecology and Environment Centre for Satellite Application on Ecology and Environment, Beijing, China;
5. School of Geomatics, Liaoning Technical University, Fuxin, China;
6. State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing, China;
7. School of Aerospace Science and Technology, Xidian University, Xi’an, China