Geodesy for a Sustainable Earth

Geometric Reference Frames.- Combined IVS Contribution to the ITRF2020.- An Experimental Combination of IGS repro3 Campaign's Orbit Products Using a Variance Component Estimation Strategy.- The Correlations of the Helmert Transformation Parameters as an Additional Auxiliary Diagnostic Tool for Terrestrial Reference Frames Quality Assessment.- Shimosato Co-Location of the SLR and GNSS Stations.- Local Ties at SLR Station Riga.- Datum Problem Handling in Local Tie Surveys at Wettzell and Metsähovi.- Close Range Photogrammetry for High-Precision Reference Point Determination: A Proof of Concept at Satellite Observing System Wettzell.- Frame Accuracy of Combined EPN Weekly Coordinate Solutions.- The Atlantic Network of Geodynamic and Space Stations (RAEGE): A Spanish-Portuguese Infrastructure of Geodetic Stations.- ITRF Densification in Cyprus.- Geodetic Analyses at the National Geographic Institute of Spain.- Large-Scale Dimensional Metrology for Geodesy - First Results from the European GeoMetre Project.- Bureau of Products and Standards: Description and Promotion of Geodetic Products.- Physical Height Systems.- Can an Earth Gravitational Model Augmented by a Topographic Gravity Field Model Realize the International Height Reference System Accurately?.- Assessing Molodensky's Heights: A Rebuttal.- On the Accuracy of Geoid Heights Derived from Discrete GNSS/Levelling Data Using Kriging Interpolation.- Gravimetric Geoid Modeling by Stokes and Second Helmert's Condensation Method in Yogyakarta, Indonesia.- A Geodetic Determination of the Gravitational Potential Difference Toward a 100-km-scale Clock Frequency Comparison in a Plate Subduction Zone.- Validation of the Hellenic Gravity Network in the Frame of the ModernGravNet Project.- Global Gravity Field Modeling.- Combined Gravity Solution from SLR and GRACE/GRACE-FO.- Contribution of LARES SLR Data to Co-estimated Earth Geopotential Coefficients.- Determination and Combination of Monthly Gravity Field Time Series from Kinematic Orbits of GRACE, GRACE-FO and Swarm.- Topographic Gravity Field Modelling for Improving High-Resolution Global Gravity Field Models.- The Benefit of Accelerometers Based on Cold Atom Interferometry for Future Satellite Gravity Missions.- Kalman-Filter Based Hybridization of Classic and Cold Atom Interferometry Accelerometers for Future Satellite Gravity Missions.- Gravimetry by Nanoscale Parametric Amplifiers Driven by Radiation-Induced Dispersion Force Modulation.- Earth Rotation.- On the Improvement of Combined EOP Series by Adding 24-hour VLBI Sessions to VLBI Intensives and GNSS Data.- Investigating the Relationship Between Length of Day and El-Niño Using Wavelet Coherence Method.- Estimation of Earth Rotation Parameter UT1 from Lunar Laser Ranging Observations.- Surface Deformation Monitoring.- Determination of a GNSS-Based Velocity Field of the African Continent.- Vertical Land Motion at Tide Gauges Observed by GNSS: A New GFZ-TIGA Solution.- CyCLOPS: A National Integrated GNSS/InSAR Strategic Research Infrastructure for Monitoring Geohazards and Forming the Next Generation Datum of the Republic of Cyprus.- GNSS Positioning.- Dilution of Precision (DOP) Factors for Evaluating Observations to Galileo Satellites with VLBI.- On the Limits of State-of-the-Art GNSS Receivers in Frequency Transfer.- On the Effect of Antenna Calibration Errors on Geodetic Estimates: Investigation on Zero and Double Difference Approaches.- Estimation and Calibration of Codephase Center Correction Using the Empirical Mode Decomposition.- On the Potential of Image Similarity Metrics for Comparing Phase Center Corrections.- Multipath Characterization Using Ray-Tracing in Urban Trenches.- Bounding the Residual Tropospheric Error by Interval Analysis.- Precise Orbit Determination of CubeSats Using Proposed Observations Weighting Model.- Geodetic Atmospheric and Remote Sensing.- Optimal TEC Forecast Models Based on Machine Learning and Time Series Analysis Techniques - A Preliminary Study on the Ring of Fire.- Sensitivity of Shipborne GNSS Troposphere Retrieval to Processing Parameters.- Application of the Total Variation Method in Near Real-Time GNSS Tropospheric Tomography.- Comparison of the Effective Isotropic Radiated Power Parameter in CYGNSS v2.1 and v3.0 Level 1 Data and Its Impact on Soil Moisture Estimation.- Cross-Polarization Correction for Soil Moisture Retrieval Using GNSS SNR Data.