Geodesy for a Sustainable Earth : : Proceedings of the 2021 Scientific Assembly of the International Association of Geodesy, Beijing, China, June 28 - July 2 2021.

• Superior document: International Association of Geodesy Symposia Series ; v.154
• Author: Freymueller, Jeffrey T.
• TeilnehmendeR: Sánchez, Laura.
• Place / Publishing House: Cham : : Springer International Publishing AG,, 2023.; ©2023.
• Year of Publication: 2023
• Edition: 1st ed.
• Language: English
• Series: International Association of Geodesy Symposia Series
• Physical Description: 1 online resource (418 pages)

Table of Contents

Intro -- Preface -- Contents -- Part I Geometric Reference Frames -- Combined IVS Contribution to the ITRF2020 -- 1 Introduction -- 2 Contributions by Individual IVS Analysis Centers -- 3 IVS Combination Procedure -- 4 IVS Combination Results -- 5 Conclusions and Outlook -- Conflict of Interest -- References -- An Experimental Combination of IGS repro3 Campaign's Orbit Products Using a Variance Component Estimation Strategy -- 1 Introduction -- 2 Material and Methods -- 3 Results -- 4 SLR External Validation -- 5 Discussion and Perspectives -- Data Availability -- References -- The Correlations of the Helmert Transformation Parameters as an Additional Auxiliary Diagnostic Tool for Terrestrial Reference Frames Quality Assessment -- 1 Introduction -- 2 Mathematical Model -- 3 Results -- 3.1 DTRF2014 -- 3.1.1 The SLR-only TRF -- 3.1.2 The VLBI-only TRF -- 3.2 IDS and ITRF2014 Comparison -- 4 Conclusions -- References -- Shimosato Co-Location of the SLR and GNSS Stations -- 1 Introduction -- 1.1 International Terrestrial Reference Frame and Co-Location -- 1.2 The Shimosato Hydrographic Observatory -- 2 Survey Instrumentation and Methodology -- 2.1 Local Survey of the Network -- 2.2 Indirect Observation of the SLR Telescope IVP -- 3 Data Analysis -- 3.1 GNSS Data Processing -- 3.2 Calculation of the Vertical Deflection -- 3.3 Data Analysis for the Local Survey -- 4 Results and Discussions -- 4.1 Comparison with the SLR-GNSS Baseline -- 4.2 Possible Error Sources -- 5 Conclusion -- Conflict of Interest -- References -- Local Ties at SLR Station Riga -- 1 Introduction -- 2 Local Tie Determination -- 3 Comparison Between 1995 and 2021 Solutions -- 4 Monitoring, Testing and Training Surveys in 2004, 2012, 2019 and 2020 -- 5 Conclusions -- References -- Datum Problem Handling in Local Tie Surveys at Wettzell and Metsahovi -- 1 Introduction -- 2 Wettzell.

2.1 Local Network -- 2.2 Transformation-Free Approach -- 2.3 Deflection of the Vertical -- 3 Metsähovi -- 3.1 Local Network -- 3.2 Scale -- 3.3 Translation and Orientation, Seamless Network -- 3.3.1 Using Geoid Model for Vertical Orientation -- 3.3.2 Estimating the 3D Orientation of Instrument -- 3.3.3 Results of Adjustments -- 4 Discussion -- References -- Close Range Photogrammetry for High-Precision Reference PointDetermination -- 1 Introduction -- 2 Data Analysis -- 2.1 Bundle Adjustment -- 2.2 Reference Point Determination -- 3 Satellite Observing System Wettzell -- 4 Analysis and Results -- 5 Combination Approaches -- 6 Conclusion -- Funding -- Availability of Data and Material -- Conflict of Interest -- References -- Frame Accuracy of Combined EPN Weekly Coordinate Solutions -- 1 Introduction -- 2 Theoretical Setting -- 3 Routinely Combined EPN Weekly Coordinate Solutions -- 3.1 General Information -- 3.2 Combination Process -- 3.3 Accuracy Assessment of EPN Weekly Frames -- 3.4 Changes that Affected the Accuracy of EPN Weekly Frames -- 3.5 Correlations in EPN Weekly Frame Parameters -- 4 Re-Processed Combined EPN Weekly Coordinate Solutions -- 5 Summary -- References -- The Atlantic Network of Geodynamic and Space Stations (RAEGE) -- 1 Introduction: RAEGE Overview -- 2 RAEGE Yebes Station -- 3 RAEGE Santa María Station -- 4 RAEGE Flores Station -- 5 RAEGE Gran Canaria Station -- 6 Conclusions and Future Work -- References -- ITRF Densification in Cyprus -- 1 Introduction -- 2 GNSS Data Processing -- 2.1 Network Configuration -- 2.2 Assessment of Daily GNSS Data -- 2.3 Assessment of Baseline Processing -- 2.4 Daily Network Solutions -- 3 Multi-Year Adjustment and Estimation of Station Velocities -- 4 Summary -- References -- Geodetic Analyses at the National Geographic Institute of Spain -- 1 Introduction -- 2 GNSS.

2.1 The Spanish National GNSS Permanent Network and Real Time Positioning Service -- 2.2 EUREF Permanent GNSS Network Analysis Centre -- 2.3 IBERRED -- 2.4 GNSS Tropospheric Products for Meteorology -- 2.5 Other Analysis and Research Activities -- 3 VLBI -- 3.1 Contribution to the IVS -- 3.2 Research Activities -- 4 SLR -- 4.1 SLR Reprocessing for ITRF -- 4.2 Target Signature Modelling -- 5 Conclusions -- References -- Large-Scale Dimensional Metrology for Geodesy-First Results from the European GeoMetre Project -- 1 Introduction -- 2 Instrumentation Development -- 3 Reference Baselines -- 4 Local Tie Metrology -- 5 Conclusions -- Conflict of Interest -- References -- GGOS Bureau of Products and Standards: Description and Promotion of Geodetic Products -- 1 Introduction -- 2 Objectives and Tasks of the BPS -- 2.1 Committee ``Contributions to Earth System Modeling'' -- 2.2 Committee ``Definition of Essential Geodetic Variables'' -- 2.3 Working Group ``Towards a Consistent Set of Parameters for the Definition of a New GRS'' -- 3 Description and Representation of Geodetic Products at the GGOS Website -- 4 Conclusions -- References -- Part II Physical Height Systems -- Can an Earth Gravitational Model Augmented by a Topographic Gravity Field Model Realize the International Height Reference System Accurately? -- 1 Introduction -- 2 Methods for Computing Wp -- 3 Geoid Models Computed from EGMes and Regional Geoid Models -- 4 Geopotential Values at the IHRF Sites in Canada -- 5 Conclusions and Outlook -- References -- Assessing Molodensky's Heights: A Rebuttal -- 1 Introduction -- 2 Auxiliary Arguments -- 3 Main Arguments -- 4 Conclusions -- References -- On the Accuracy of Geoid Heights Derived from Discrete GNSS/Levelling Data Using Kriging Interpolation -- 1 Introduction -- 2 Data and Methods -- 3 Results and Discussion -- 4 Conclusion -- References.

Gravimetric Geoid Modeling by Stokes and Second Helmert's Condensation Method in Yogyakarta, Indonesia -- 1 Introduction -- 2 Data and Method -- 2.1 Data Used -- 2.2 RCR Under Stokes-Helmert Scheme -- 3 Results and Discussions -- 4 Final Remarks -- Conflict of Interest -- References -- A Geodetic Determination of the Gravitational Potential Difference Toward a 100-km-Scale Clock Frequency Comparison in a Plate Subduction Zone -- 1 Introduction -- 2 Methods and Data -- 2.1 The Study Area and the Height Reference System -- 2.2 Repeated Leveling Surveys -- 2.3 Leveling Survey Near the Clock Sites -- 2.4 Tidal Effects on the Leveling -- 3 Results -- 3.1 Leveling -- 3.2 Tidal Effects -- 4 Discussion -- 4.1 Treatment of Tides for Comparison with Chronometric Leveling -- 4.2 Other Effects -- 4.2.1 Long Wavelength Changes -- 4.2.2 Nontidal Loading -- 4.2.3 Groundwater -- 4.2.4 Atmospheric Loading -- 4.3 The GNSS-Geoid Method -- 5 Summary -- References -- Validation of the Hellenic Gravity Network in the Frame of the ModernGravNet Project -- 1 Introduction -- 2 Measurements and Comparisons -- 3 Parametric Modeling -- 4 Discussion -- References -- Part III Global Gravity Field Modeling -- Combined Gravity Solution from SLR and GRACE/GRACE-FO -- 1 Introduction -- 2 GRACE and GRACE-FO Gravity Recovery -- 3 SLR Gravity Recovery -- 4 Combined Gravity Solution -- 5 Test Case and Combination Strategies -- 6 Results and Discussion -- 7 Conclusions -- References -- Contribution of LARES SLR Data to Co-estimated Earth GeopotentialCoefficients -- 1 Introduction -- 2 SLR Processing at AIUB -- 2.1 Orbit Modeling -- 2.2 Combination -- 3 Validation of the SLR Solutions -- 4 Conclusions -- References -- Determination and Combination of Monthly Gravity Field Time Series from Kinematic Orbits of GRACE, GRACE-FO and Swarm -- 1 Introduction -- 2 Gravity Field Recovery.

3 Characteristics of Gravity Field Time Series -- 4 Combination of Gravity Field Time Series -- 4.1 VCE Combination -- 4.2 Stochastic Combination -- 5 Evaluation of Mass Trends and Variations -- 6 Conclusions and Outlook -- References -- Topographic Gravity Field Modelling for Improving High-Resolution Global Gravity Field Models -- 1 Introduction -- 2 Methodology -- 3 Analysis -- 4 Evaluation of the Enhanced Model w.r.t. Ground Data -- 5 Conclusion and Future Work -- References -- The Benefit of Accelerometers Based on Cold Atom Interferometry for Future Satellite Gravity Missions -- 1 Introduction -- 2 Performance of an Atom Interferometry Accelerometer -- 3 Variation of Non-Gravitational Accelerations Within One Interferometer Cycle -- 4 Closed-Loop Simulation -- 4.1 Simulation Procedure -- 4.2 Simulation Results -- 5 Conclusions -- Conflict of Interest -- References -- Kalman-Filter Based Hybridization of Classic and Cold Atom Interferometry Accelerometers for Future Satellite Gravity Missions -- 1 Introduction -- 2 Orbit and Accelerometer Modelling -- 2.1 Cold Atom Interferometer Accelerometry -- 2.2 In-Orbit Simulation of Electrostatic and CAI Accelerometers -- 3 Extended Kalman Filter -- 3.1 Dynamic System and Phase Prediction -- 3.2 CAI Observation Equation -- 4 Results and Discussion -- 4.1 Solving for the Phase Ambiguity -- 4.2 Hybridization of CAI-ACC with the GRACE-FO E-ACC -- 4.3 Hybridization of CAI-ACC with an Improved E-ACC -- 4.4 Discussion on the Impact of Rotational Accelerations and Gravity Gradient on the Measurements -- 5 Conclusions -- References -- Gravimetry by Nanoscale Parametric Amplifiers Driven by Radiation-Induced Dispersion Force Modulation -- 1 Introduction -- 2 Casimir Force Manipulation -- 3 Nanomechanical Oscillators -- 3.1 Free and Dampened Harmonic Oscillators -- 3.2 Electrostatically Driven Oscillators.

3.3 Oscillators with Static Casimir Force Perturbation.