1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, China
2. State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, and University of Chinese Academy of Sciences, Beijing, China
3. National Space Science Center, Chinese Academy of Sciences, Beijing, China
4. Guilin University of Technology, Guilin, China
5. Xi'an Jiaotong University, Xi'an, China
6. Hydrology Remote Sensing Laboratory, Center for Space and Remote Sensing Research, National Central University, Taoyuan, Taiwan