1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
2. Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
3. Beijing Institute of Surveying and Mapping, Beijing 100038, China
4. Beijing Key Laboratory of Urban Spatial Information Engineering, Beijing 100038, China
5. International Research Center of Big Data for Sustainable Development Goals, Beijing 100094, China
6. Shaanxi Institute of Surveying and Mapping of Land Ltd., Xi’an 710054, China
7. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
8. School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China