Intro; Preface; Conference Topics; Editorial Board; Topic: S01: Satellite Navigation Applications; Chairman; Vice-chairmen; Topic: S02: Navigation and Location-Based Service; Chairman; Vice-chairmen; Topic: S03: Satellite Navigation Signal and Signal Processing; Chairman; Vice-chairmen; Topic: S04: Satellite Orbit and System Error Processing; Chairman; Vice-chairmen; Topic: S05: Spatial Frames and Precise Positioning; Chairman; Vice-chairmen; Topic: S06: Time Primary Standard and Precision Time Service; Chairman; Vice-chairmen; Topic: S07: Satellite Navigation Augmentation Technology

ChairmanVice-chairmen; Topic: S08: Test and Assessment Technology; Chairman; Vice-chairmen; Topic: S09: User Terminal Technology; Chairman; Vice-chairmen; Topic: S10: PNT System and Multi-source Fusion Navigation; Chairman; Vice-chairmen; Topic: S11: Anti-interference and Anti-spoofing Technology; Chairman; Vice-chairmen; Topic: S12: Policies, Regulations, Standards and Intellectual Properties; Chairman; Vice-chairmen; Scientific Committee; Chairman; Vice-chairmen; Executive Chairmen; Committee Members; Executive Members; Organizing Committee; Directors; Deputy Directors; Secretary-General

Deputy Secretary-GeneralCommittee Members; Contents; Satellite Navigation Application; The Single Point Positioning and Program Application of BDS/GPS/GLONASS Based on HELMERT Variance Component Estimation; Abstract; 1 Introduction; 2 Time and Space Unification of BDS/GPS/GLONASS Data; 3 The Single Point Location of BDS/GPS/GLONASS Multi-system Based on Variance Data Fusion; 4 Program Implementation and Experimental Process; 4.1 Time System Correction; 4.2 Calculation of Satellite Coordinates Based on Broadcast Ephemeris; 4.3 Propagation Error Correction

4.4 Coordinate Solution and Accuracy Assessment5 Experimental Examples and Analysis; 6 Conclusions; Acknowledgment; References; Ground-Based GPS for Soil Moisture Monitoring; Abstract; 1 Introduction; 2 Principles and Methods; 2.1 Soil Moisture Inversion Principle; 2.2 Soil Moisture Inversion Process; 3 Case Analysis; 3.1 Data Source; 3.2 Correlation Coefficient; 3.3 Linear Model; 4 Conclusion and Outlook; Acknowledgments; References; BDS-MR for Snow Depth Monitoring in Altai; Abstract; 1 Introduction; 2 BDS-MR Detection of Snow Depth of the Basic Theory

3 Construction of Altai BDS Snow Monitoring Station4 Monitoring and Analysis of BDS-MR Snow Depth by Different Beidou Satellite Types; 5 Conclusions; Acknowledgments; References; Monitoring the Study of Offshore Sea Level Changes with GPS-MR Technology; Abstract; 1 Introduction; 2 Basic Theory of Monitoring Tidal Level Changes with GNSS-MR; 3 Basic Principles for Obtaining Sea Level Change Using GNSS-MR Tidal Level Changes; 4 Experimental Analysis of GNSS-MR Offshore Sea Level Change; 4.1 Experimental Data Source; 4.2 Experimental Analysis of Daily Tide Level Change Using GPS-MR