1. School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
2. Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou 510070, China
3. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
4. Satellite (Shandong) Technology Group Co., Ltd., Jinan 250031, China