1. State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China
2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
3. Division of Geodetic Science, School of Earth Sciences, the Ohio State University, Columbus, Ohio, USA
4. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
5. College of Surveying and Geo-Informatics, Shandong Jianzhu University, Jinan, China