Vistas for Geodesy in the New Millennium: IAG 2001 Scientific Assembly, Budapest, Hungary September 2–7, 2001

Front Matter....Pages I-XVII
Front Matter....Pages 1-1
The European Vertical Reference System (EVRS), Its relation to a World Height System and to the ITRS....Pages 78-83
A Reference Surface for the Unified Height System in the Northern Part of South America....Pages 84-89
The Way to a Consistent National Height System for Switzerland....Pages 90-95
Prospects for the Australian Height Datum and Geoid Model....Pages 96-101
Local Effects in the Brazilian Vertical Datum....Pages 102-107
Do We Need a New Reference System?....Pages 108-113
Time Evolution of a World Geodetic Datum....Pages 114-123
Activities of the International GPS Service (IGS) Reference Frame Working Group....Pages 3-8
Extended Kalman filtering for combining Earth rotation parameters time series....Pages 9-14
Gravity Model Induced Systematic Errors in Reference Frames....Pages 15-17
Recent Developments in Space VLBI Geodesy Demonstration Experiment (GEDEX)....Pages 18-23
Earth Orientation Parameters — Combination of Results Obtained by Different Techniques....Pages 24-29
Geocenter Variations Derived From SLR Data to LAGEOS 1 and 2....Pages 30-35
Dynamical Determination of Origin and Scale in the Earth System from Satellite Laser Ranging....Pages 36-41
Status of the European Reference Frame — EUREF....Pages 42-46
EPN Data and Product Analysis for Improved Velocity Estimation: First Results....Pages 47-52
A Regional ITRF Densification by Blending Permanent and Campaign Data — The CEGRN campaigns and the Central European Velocity Field....Pages 53-58
Using Double Difference Information from Network Solutions to Generate Observations for a Virtual GPS Reference Receiver....Pages 59-65
Integration of a Regional GPS Network within ITRF Using Precise Point Positioning....Pages 66-71
Hungary’s New Gravity Base Network (MGH-2000) and It’s Connection to the European Unified Gravity Net....Pages 72-77
Front Matter....Pages 1-1
Is there a need for a Geodetic Datum 2000? Discussion of a “Heiskanen & Moritz’ Proposition”....Pages 124-127
Front Matter....Pages 129-129
Estimating the Gravity Disturbance Vector from Airborne Gravimetry....Pages 199-204
Error sources in airborne gravimetry employing a spring-type gravimeter....Pages 205-210
Improving DGPS Accelerations for Airborne Gravimetry: GPS Carrier Phase Accelerations Revisited....Pages 211-216
Geoid Determination from Airborne Gravity Data Using Different Filtering Frequencies and DTM Resolutions....Pages 217-222
Efficient Regional Geoid Computations from Airborne and Surface Gravimetry Data: A Case Study....Pages 223-228
Airborne laser and interferometric SAR for mapping heights of glaciers and sea-ice....Pages 229-235
Validation and Error Correction of Space-derived Digital Elevation Models Using ERS Satellite Altimeter Data....Pages 236-241
A Comparison of Direct and Indirect Numerical Methods for the Downward Continuation of Airborne Gravity Data....Pages 242-247
Fast Spherical Collocation: A General Implementation....Pages 131-137
Principal axes and principal moments of inertia from recent satellite gravity field solutions....Pages 138-143
On the Use and Abuse of Helmert’s Second Method of Condensation....Pages 144-149
Combination of gravity, altimetry and GPS/Leveling data for the numerical solution of altimetry-gravimetry boundary value problems....Pages 150-155
On the Inversion of GRACE Observables for Local Geoid Determination....Pages 156-161
On the Potential of a Combined Use of CHAMP Star Tracking and Accelerometry....Pages 162-166
Calibration and Error Assessment of GOCE Data....Pages 167-174
On the Regularization Problem in Gravity Field Determination from Satellite Gradiometric Data....Pages 175-180
Aliasing and Polar Gap Effects on Geopotential Coefficient Estimation: Space-wise Simulation Study of GOCE and GRACE....Pages 181-186
Effects of Atmospheric Variations on the Marine Geoid Determined by Forthcoming Gravity Satellite....Pages 187-192
Gravity field modelling by torsion balance data — a case study in Hungary....Pages 193-198
Front Matter....Pages 129-129
On the Iterative Solution of Ill-Conditioned Normal Equations by the Use of Lanczos Methods....Pages 248-252
The Performance of the Time-wise Semi-analytical Inversion of Satellite Gravity Gradients....Pages 253-258
A Simple and Stable Approach to High Degree and Order Spherical Harmonic Synthesis....Pages 259-264
A Wavelet Approach for the Construction of Multi-Grid Solvers for Large Linear Systems....Pages 265-270
Front Matter....Pages 271-271
GPS radio occultation with CHAMP: First results and status of the experiment....Pages 273-278
GNSS Radio Occultations for Climate Applications: a Benchmark with Spaceborne Nadir Sounders....Pages 279-284
On the Specific Aspects of Precise Tropospheric Path Delay Estimation in GPS Analysis....Pages 285-290
Ionospheric Effects During a Geomagnetic Storm....Pages 291-296
Exploitation of Ground Based GPS for Numerical Weather Prediction and Climate Applications in Europe....Pages 297-302
Kinematic Orbit Determination for Low Earth Orbiters (LEOs)....Pages 303-308
Analysis of the Earth’s Gravitational Field from Semi-Continuous Ephemeris of a Low Earth Orbiting GPS-Tracked Satellite of Type CHAMP, GRACE or GOCE....Pages 309-315
GPS/LEO Rapid Orbit Determination in Support of GPS Meteorology: Status and Future Plans....Pages 316-321
Kinematic Orbit Determination of LEOs Based on Zero or Double-difference Algorithms Using Simulated and Real SST GPS Data....Pages 322-328
Network Optimization with respect to Systematic Errors....Pages 329-334
High-Precision Integrated GPS/INS/CCD System for Transportation Applications....Pages 335-340
Principal Component Analysis of Wavelet Transformed GPS Data for Deformation Monitoring....Pages 341-346
The use of GPS for monitoring cable-stayed bridges in seismic areas....Pages 347-352
Multi-applications of GPS for Hydrographic Surveys....Pages 353-358
New Challenges in Connection with GPS Precise Positioning....Pages 359-364
SIGMA- F : Variances of GPS Observations Determined by a Fuzzy System....Pages 365-370
Front Matter....Pages 271-271
Querying Raster Data Structures — Probabilistic and Non-probabilistic Approaches On Knowledge Based Template Matching Methods....Pages 371-376
BLIMPBE and its Geodetic Applications....Pages 377-381
A Comparison Between Statistical & Fuzzy Techniques in Outlier Detection....Pages 382-387
On the periodicity of GPS time series....Pages 388-392
Modernised GPS: Phase-only Integer Ambiguity Estimability in the Presence of Ionospheric Delays....Pages 393-397
Detection and Mitigation of Static Multipath in L1 Carrier Phase Measurements Using a Dual-Antenna Approach....Pages 398-403
A Statistical Test Procedure for the Detection and Identification of GPS Systematic Errors....Pages 404-409
Modelling residual systematic errors in GPS positioning: methodologies and comparative studies....Pages 410-414
Front Matter....Pages 415-415
Complex Interpretation of the Earth Despinning History....Pages 417-422
The “hidden torque”: the art, for a torque, to dominate everywhere and appear in no equation....Pages 423-427
Climate Excitation of Polar Motion....Pages 428-433
Oceanic excitation of the Chandler wobble using a 50-year time series of ocean angular momentum....Pages 434-439
Analysis of the EOPs from Independent Parallel VLBI Sessions....Pages 440-444
Analysis of Rapid Variations of Polar Motion Determined by GPS....Pages 445-450
Improvement of the Earth nutation theory by taking into account the atmosphere and viscosity of the liquid core....Pages 451-456
Modulation of the Seasonal Cycle in Length-of-Day and Atmospheric Angular Momentum....Pages 457-462
Numerical Solutions for the Non-Linear Liouville Equation....Pages 463-468
Subdiurnal earth orientation parameters from VLBI networks — determinability and significance....Pages 469-474
Investigation of Sea Level Variations at Two Tide Gauges in Bulgaria....Pages 475-480
Seasonal and Low-Frequency Variability in Basin-Scale Sea Level....Pages 481-486
Front Matter....Pages 415-415
Sea Level Variations in the North Atlantic....Pages 487-492
Sea-Level Variations in the Baltic Sea: Consistency of Geodetic Observations and Oceanographic Models....Pages 493-498
Bias in Geodetic Site Velocity due to Annual Signals: Theory and Assessment....Pages 499-500
NW Bulgaria — The Northern Boundary of the Aegean Extensional Domain....Pages 501-505
Near-Field Deformation of the Imperial Valley, Southern California, from GPS and InSAR Measurements....Pages 506-511
Recent Crustal Deformation and Strain Accumulations in Continental China Inferred from GPS and Seismicity Data....Pages 512-517
Far-Field Deformation due to Volcanic Activity and Earthquake Swarm....Pages 518-522
Inverse Barometer Coefficients Obtained at Short Time-scales from ERS Tandem Mission Altimeter Data....Pages 523-528
Improving the Estimation of Bottom Ocean Topography with Altimetry Derived Gravity Data Using the Integrated Inverse Method....Pages 529-534
Estimating Altimetry 5’x5’ Mean Gravity Anomaly Regional Accuracies....Pages 535-541
Earth’s Dimension Specified by Geoidal Geopotential....Pages 542-542
Analysis of Poseidon and ERS-2 Satellite Radar Altimeter Waveform Data around Australian Coasts....Pages 543-550
Spatial Correlation Between Regional Long-Term Changes in sea Level and sea Surface Temperature....Pages 551-555
Front Matter....Pages 557-557
Long-Term Cooperation in Geodesy and Geodynamics of CEI Countries. Experiences and Results....Pages 559-565
The Cooperation of the Scientific Institutions of the Former Socialist Countries in Central and Eastern Europe in the Field of Geodesy and Some Result....Pages 566-572
Scientific Cooperation of the Central and Eastern European Countries (CEEC) and the Hungarian Geodetic Control Nets....Pages 573-578
Site Velocities Obtained from Central Europe Regional Geodynamics Project and their Interpretation in Form of Surface Deformations....Pages 579-583
Space Geodesy and Earth Sciences....Pages 584-589
Interdisciplinary Space Geodesy: Challenges in the New Millennium....Pages 590-594
The greening of geodetic theory....Pages 595-601
Front Matter....Pages 557-557
The IAG-REVIEW 2000–2001 Executive Summary....Pages 603-608
Integrated Global Geodetic Observing System (IGGOS): A Candidate IAG Project....Pages 609-614
Back Matter....Pages 615-622