1. Center for Space Research University of Texas at Austin Austin TX USA
2. Division of Geodetic Science School of Earth Science The Ohio State University Columbus OH USA
3. Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan China
4. Astronomical Institute Czech Academy of Sciences Ondrejov Czech Republic
5. Faculty of Aerospace Engineering Delft University of Technology Delft The Netherlands
6. PGMF and School of Physics Huazhong University of Science and Technology Wuhan China