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.