1. National Geomatics Centre of China, Beijing, China
2. East China University of Technology, Nanchang, China
3. Department of Urban Planning & Environment, KTH Royal Institute of Technology, Stockholm, Sweden
4. Department of Civil Engineering, Ryerson University, Toronto, Canada
5. College of Surveying and Geo-Informatics, Tongji University, Shanghai, China
6. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
7. Space Research and Technology Institute, Bulgarian Academy of Sciences, Sofia, Bulgaria