1. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
3. China Centre for Resources Satellite Data and Application, Beijing 100094, China
4. College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, China