1. National Geomatics Center of China, Beijing, China
2. School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, China
3. School of Land Science and Technology, China University of Geosciences, Beijing, China
4. Gansu Academy of Sciences, Lanzhou, China
5. Chongqing Survey Institute, Chongqing, China
6. Beijing Chusudu Technology Co., Ltd., Beijing, China
7. Central South University, Changsha, China