1. School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China
2. Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094, China
3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
4. Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources, East China University of Technology, Nanchang 330013, China
5. College of Earth Sciences, Guilin University of Technology, Guilin 541004, China