1. State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
2. Third Surveying and Mapping Institute of Guizhou Province, Guiyang, China
3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
4. Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources, Chinese Academy of Sciences, Beijing, China
5. Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA, USA