1. Key Laboratory of Remote Sensing of Gansu Province, Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
2. School of Electronic Information and Electrical Engineering, Panzhihua University, Panzhihua, China
3. National Cryosphere Desert Data Center, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
4. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou, China