Beyond 100 : : Proceedings of the IAG General Assembly, Montreal, Canada, July 8-18 2019.

• Superior document: International Association of Geodesy Symposia Series ; v.152
• Author: Freymueller, Jeffrey T.
• TeilnehmendeR: Sánchez, Laura.
• Place / Publishing House: Cham : : Springer International Publishing AG,, 2022.; ©2023.
• Year of Publication: 2022
• Edition: 1st ed.
• Language: English
• Series: International Association of Geodesy Symposia Series
• Physical Description: 1 online resource (276 pages)

Table of Contents

Intro -- Preface -- Contents -- Part I Reference Systems and Frames -- Towards an International Height Reference Frame Using Clock Networks -- 1 Introduction -- 2 Relativistic Geodesy with Clocks -- 2.1 Relativistic Geodesy -- 2.2 Clock Networks -- 3 A Hybrid Clock Network for the Establishment of IHRF -- 4 Clock Networks for Height System Unification -- 5 Conclusions and Future Perspectives -- References -- Towards the Realization of the International Height Reference Frame (IHRF) in Argentina -- 1 Introduction -- 2 Computation of Potential Values W(P) -- 2.1 Potential Values W(P) Recovered from an Existing Geoid Model -- 2.2 Estimation of Potential Values W(P) with Global Gravity Models -- 3 Data Used -- 3.1 Geoid Model GEOIDE-Ar 16 -- 3.2 Gravity Data Around the Proposed IHRF Stations -- 3.3 Standards -- 4 Results and Discussion -- 5 Conclusions and Future Work -- References -- Comparing Vienna CRF solutions to Gaia-CRF2 -- 1 Introduction -- 2 Data and Analysis -- 3 Methodology -- 3.1 Outlier Detection -- 4 Results and Discussion -- 5 Conclusions and Outlook -- References -- Co-location of Space Geodetic Techniques: Studies on Intra-Technique Short Baselines -- 1 Introduction -- 2 Multi-Year Analysis of GNSS Short Baselines at Co-location Sites -- 3 Assessment of the VLBI Short Baseline at Wettzell -- 4 Differencing Approaches for SLR Short Baselines -- 4.1 Single-Difference Residuals [2 Telescopes to 1 Satellite] -- 4.2 Single-Difference Residuals [1 Telescope to 2 Satellites] -- 4.3 Double-Difference Residuals -- 5 Conclusions and Outlook -- References -- Status of IGS Reprocessing Activities at GFZ -- 1 Introduction -- 2 Data and Processing -- 2.1 Data Selection -- 2.2 Processing of the First Test Campaign -- 2.3 Updating Models for Repro 3 -- 3 Initial Results -- 4 Summary and Outlook -- References.

A Wavelet-Based Outlier Detection and Noise Component Analysis for GNSS Position Time Series -- 1 Introduction -- 2 Methodology -- 2.1 Dyadic Wavelet Analysis -- 2.2 Outlier Detection in Residual with IQR -- 2.3 Noise Component Estimation Using MINQUE Approach -- 3 Real GNSS Position Time Series Analysis -- 3.1 Signal and Noise Separation -- 3.2 Outlier Detection -- 3.3 Noise Components Estimation -- 4 Conclusions and Remarks -- References -- Part II Gravity Field Modelling -- International Combination Service for Time-Variable Gravity Fields (COST-G) -- 1 Introduction -- 2 COST-G Organization -- 2.1 Central Bureau (CB) -- 2.2 Analysis Centers (ACs) -- 2.3 Partner Analysis Centers (PCs) -- 2.4 Analysis Center Coordinator (ACC) -- 2.5 Validation Center (VC) -- 2.6 Product Evaluation Group (PEG) -- 2.7 Level-3 Product Center (L3C) -- 3 COST-G Workflow -- 3.1 Harmonization of Input Solutions -- 3.2 Quality Control of Input Solutions -- 3.3 Combination of Input Solutions -- 3.4 Validation of Combined Solution -- 3.4.1 Internal Validation -- 3.4.2 External Validation -- 4 Conclusions -- References -- LUH-GRACE2018: A New Time Series of Monthly Gravity Field Solutions from GRACE -- 1 Introduction -- 2 Overview of the Gravity Field Recovery Method -- 3 Data -- 4 Force Modeling -- 5 Numerical Integration -- 6 Parametrization -- 7 GRACE-FO Solutions -- 8 Results and Evaluation -- References -- A Precise Geoid Model for Africa: AFRgeo2019 -- 1 Introduction -- 2 The Data -- 2.1 Gravity Data -- 2.2 Digital Height Models -- 2.3 A Short History of Used Data -- 3 Gravity Reduction -- 4 Interpolation Technique -- 5 Geoid Determination -- 6 Geoid Comparison -- 7 Conclusions -- References -- Part III Earth Rotation and Geodynamics -- A First Assessment of the Corrections for the Consistency of the IAU2000 and IAU2006 Precession-Nutation Models -- 1 Introduction.

2 Fundamentals and Methodology -- 2.1 Equations of Models -- 3 Methodology -- 4 Results -- 5 Conclusions -- References -- Report of the IAU/IAG Joint Working Group on Theory of Earth Rotation and Validation -- 1 Introduction -- 2 Selected Outcomes -- 3 Conclusion and Outlook -- Conflict of Interest -- References -- Achievements of the First 4 Years of the International Geodynamics and Earth Tide Service (IGETS) 2015-2019 -- 1 Introduction -- 2 Observation Network -- 3 Data Products -- 3.1 Level 1 -- 3.2 Level 2 -- 3.3 Level 3 -- 4 Scientific Applications of IGETS Data -- 5 Conclusions -- References -- Inter-Comparison of Ground Gravity and Vertical Height Measurements at Collocated IGETS Stations -- 1 Introduction -- 2 Methodology and Data Processing -- 2.1 Spectral Coherency and Gravity-to-Height Ratio -- 2.2 GNSS Data Processing -- 2.3 SG Data Processing -- 3 Results -- 3.1 Gravity-to-Height Ratio from Surface Loading Computations -- 3.2 Gravity-to-Height Ratio from GNSS and SG Time-Series -- 4 Summary -- References -- Part IV Multi-Signal Positioning, Remote Sensing and Applications -- A Benchmarking Measurement Campaign to Support Ubiquitous Localization in GNSS Denied and Indoor Environments -- 1 Introduction and Objectives -- 2 PNT Application Requirements -- 3 Field Campaign at The Ohio State University -- 3.1 Indoor UWB Localization Results -- 3.2 Wi-Fi Localization Results -- 4 Concluding Remarks and Outlook -- References -- A Method to Correct the Raw Doppler Observations for GNSS Velocity Determination -- 1 Introduction -- 2 Velocity Determination Using GNSS Raw Doppler Observations -- 3 A New Method of Sign Correction for GNSS Raw Doppler Observations -- 3.1 Carrier-Phase-Derived Doppler Observations -- 3.2 Construction of the Sign Correction Function -- 3.3 Correction Method for the GNSS Raw Doppler Observations.

4 Experiments and Analysis -- 5 Summary -- References -- Assessment of a GNSS/INS/Wi-Fi Tight-Integration Method Using Support Vector Machine and Extended Kalman Filter -- 1 Introduction -- 2 GNSS/INS Integration Techniques -- 3 Outdoor Wi-Fi Positioning -- 4 Integration Between GNSS, INS and Wi-Fi -- 5 Experiment and Results -- 6 Conclusions -- References -- Enhancing Navigation in Difficult Environments with Low-Cost, Dual-Frequency GNSS PPP and MEMS IMU -- 1 Introduction -- 2 Inertial Navigation System -- 3 GNSS PPP/INS Tightly Coupled Kalman Filter -- 4 Field Test and Results -- 5 Conclusions and Future Work -- References -- Part V Monitoring and Understanding the Dynamic Earth with Geodetic Observations -- Water Depletion and Land Subsidence in Iran Using Gravity, GNSS, InSAR and Precise Levelling Data -- 1 Introduction -- 2 Geodetic and Gravity Data -- 3 Results -- 3.1 Space Gravimetry (GRACE) -- 3.2 Absolute Gravity -- 3.3 Geodetic and InSAR Results -- 4 Discussion -- 5 Conclusion -- References -- Past and Future Sea Level Changes and Land Uplift in the Baltic Sea Seen by Geodetic Observations -- 1 Introduction -- 2 Data and Methods -- 2.1 Geodetic Data -- 2.2 Sea Level Data -- 2.3 Future Scenarios -- 3 Results and Discussion -- 3.1 Geodetic and Sea Level Data -- 3.2 Comparison of Geodetic and Sea Level Trends -- 3.3 Future -- 4 Conclusions -- References -- Estimation of Lesser Antilles Vertical Velocity Fields Using a GNSS-PPP Software Comparison -- 1 Introduction -- 2 Data -- 3 Processing -- 4 Coordinate and Velocity Differences -- 5 Vertical Velocity Results -- 6 Comparison with Existing Solutions -- 7 Discussion -- 8 Conclusion -- References -- Time Variations of the Vertical Component in Some of Japanese GEONET GNSS Sites -- 1 Introduction -- 2 Data -- 3 Result and Discussion -- 3.1 Agricultural Usage of Groundwater.

3.2 Groundwater Mining for Natural Gas and Iodine -- 3.3 Groundwater for Snow Melting -- 4 Conclusion -- References -- An Approximate Method to Simulate Post-Seismic Deformations in a Realistic Earth Model -- 1 Introduction -- 2 Complex DLNs in the Laplace Domain -- 3 Real DLNs in the Time Domain via NILT -- 3.1 The Oscillational Integral During NILT -- 3.2 Convergence of the Proposed Method -- 3.3 Verifying Using a Comparison with a Previous Method -- 4 Discussion and Conclusions -- References -- Geodetic Monitoring of the Variable Surface Deformation in Latin America -- 1 Introduction -- 2 Surface-Kinematics Modelling Based on GNSS Multi-Year Solutions -- 3 Existing Velocity Models for SIRGAS (VEMOS) -- 4 Present-Day Deformation Model and Velocity Field for Latin America (VEMOS2017) -- 5 Discussion -- 6 Conclusions and Outlook -- 7 Supplementary Data -- References -- Progress in GTEWS Ground Displacement Measurements and Tsunami Warning -- 1 Introduction -- 2 The Contribution of GNSS -- 3 GTEWS Networks -- 4 GNSS-Aided Models -- 5 A Look into Recommendations -- 6 Discussion -- References -- Part VI Geodesy for Atmospheric and Hydrospheric Climate Research (IAG, IAMAS, IACS, IAPSO) -- Characterization of the Upper Atmosphere from Neutral and Electron Density Observations -- 1 Introduction -- 2 Data and Methods -- 2.1 Ionospheric Observations -- 2.2 Thermospheric Observations -- 2.3 Space Weather and Geomagnetic Indices -- 2.4 PCA Modeling -- 3 Results and Analysis -- 4 Conclusions and Discussion -- References -- Tropospheric Products from High-Level GNSS Processing in Latin America -- 1 Introduction -- 2 Methodology -- 2.1 Estimation of ZTD Values Based on the Operational SIRGAS Processing (ZTDSIR) -- 2.2 ZTDSIR Internal Consistency -- 2.3 ZTDSIR Validation with IGS Tropospheric Products -- 2.4 ZTDSIR Validation with Radiosonde Data.

2.5 ZTD Estimation Applying PPP.