1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430070, China
2. Space Science Institute, Macau University of Science and Technology, Avenida Wailong, Taipa, Macau 999078, China
3. Observatoire Géodésique de Tahiti, University of French Polynesia, BP 6570, F-98702 Faa'a, Tahiti, French Polynesia
4. Institute of Space Technology and Space Applications, Universität der Bundeswehr München, Neubiberg 85579, Germany
5. Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai 200030, China