Sansò A Window on the Future of Geodesy

Proceedings of the International Association of Geodesy. IAG General Assembly, Sapporo, Japan June 30 - July 11, 2003
1. Auflage 2006
ISBN: 978-3-540-27432-2
Verlag: Springer-Verlag
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 619 Seiten

Every four years the International Association of Geodesy meets at the IUGG General Assembly and this has always been an important event for IAG to make the point on where are we going as geodesists both in terms of scientific production as well as in terms of organization. The proceedings of IAG at the Sapporo 2003 General Assembly are the mirror of our scientific achievements, and, as Geodesy is a living entity like any other science, we could say it is a way to see the picture of what we consider our field of applications as well as of theoretical speculations. Let us examine this aspect in terms of what are: the object of our research, the methods we use, the general scientific results we can produce. • Our object: here I would like to use a pseudo-Helmert definition; the object of Geodesy is knowing the surfaces of the earth: the geometric surface by positioning and e.m. surveying, and the physical surface, i.e the gravity field, by land, marine or satellite gravimetry, and their time variations. This "object" is naturally interlaced with other physical properties of the earth both through deep processes affecting its surface and through the gravity field at all different scales from the global to the regional and local, where most engineering applications take place.

Autoren/Hrsg.

Sansò, Fernando

Inhaltsverzeichnis

1;Contents;11
2;Positioning;18
2.1;ITRF Combination - Status and Recommendations for the Future;19
2.2;Time Evolution of the Terrestrial Reference Frame;25
2.3;Scale variation of GPS time series;31
2.4;Vertical repeatability of GPS measurements in the Tsukuba GPS/ MET dense- network campaigns;37
2.5;Horizontal Crustal Motion Estimates for the UK inferred from GPS: Preliminary Results;42
2.6;Results of the SIRGAS Campaign 2000 and Coordinates Variations with Respect to the 1995 South American Geocentric Reference Frame;48
2.7;Implementation of a Semi- Dynamic Datum for New Zealand;54
2.8;GPS measurements to investigate the reason why GPS is less accurate in mountain areas;60
2.9;Towards More Reliable Estimation of GPS Positioning Accuracy;64
2.10;Realistic Uncertainty Measures for GPS Observations;70
2.11;Networked Transport of RTCM via Internet Protocol ( NTRIP);76
2.12;Numerical Weather Predictions for GPS Positioning;81
2.13;A Multi-Base-Station Approach for Long Range Differential GNSS Positioning of Airborne Sensors;87
2.14;Point Real- Time Kinematic Positioning;93
2.15;The Integration of GPS and Pseudolites for Bridge Monitoring;99
2.16;HYBRID SENSOR SYSTEM FOR BRIDGE DEFORMATION MONITORING: INTERFACING WITH STRUCTURAL ENGINEERS;105
2.17;A Fuzzy System for the Assessment of Landslide Monitoring Data;111
2.18;OASYS - Integrated Optimization of Landslide Alert Systems;117
2.19;Combined Evaluation of Geodetic and Geotechnical Data during Tunnel Excavation by Use of a Knowledge- Based System;121
3;Advanced Space Technology;127
3.1;Quasi real-time positioning of spacecrafts using the Internet VLBI system;128
3.2;Rapid Turnaround EOP Measurements by VLBI over the Internet;134
3.3;Determination of tropospheric parameters within the new IVS Pilot Project;140
3.4;VLBIONOS - PROBING THE IONOSPHERE BY MEANS OF VERY LONG BASELINE INTERFEROMETRY;146
3.5;Numerical Simulations for Geodetic Parameter Estimation from Space VLBI Data;152
3.6;Relativistic VLBI Delay Model for Finite Distance Radio Source;156
3.7;Synergy of VLBI and GPS observations in Japan;161
3.8;Ground- based verification of four-way Doppler measurement for the SELENE mission;167
3.9;Results of the Critical Design of RSAT/ VRAD Mission Instruments on SELENE Sub- satellites Rstar/ Vstar for Selenodesy;172
3.10;Application of a PZT telescope to In situ Lunar Orientation Measurement ( ILOM);178
3.11;Combined Processing of GPS Data from Ground Station and LEO Receivers in a Global Solution;184
3.12;Efficient Stochastic Orbit Modeling Techniques using Least Squares Estimators;190
3.13;Kinematic Precise Orbit Determination for Gravity Field Determination;196
3.14;Gravity Field Recovery and Validation by Analysis of Short Arcs of a Satellite- to- Satellite Tracking Experiment as CHAMP and GRACE;204
3.15;Combination of Sea- Level Observations and an Oceano-graphic Model for Geodetic Applications in the Baltic Sea;210
3.16;Analysis of GPS Campaign Observations of the Asia Pacific Regional Geodetic Project ( APRGP) - Establishment of a Velocity Field-;216
3.17;The proposed International DORIS Service;222
3.18;Calibration/ validation of GOCE data by terrestrial torsion balance observations;229
4;Determination of the Gravity Field;235
4.1;Repeated Measurements of Gravity with the Absolute Gravimeter FG5 # 210 at Matsushiro, Japan and Comparison with the Superconducting Gravimeter T011;236
4.2;APPLICATION OF GRAVIMETRY BY HELICOPTER TO IDENTIFY MARINE ACTIVE FAULTS AND IMPROVE ACCURACY OF GEOID AT COASTAL ZONES;242
4.3;A Gravity Database of Southwest Japan: Application to Bouguer Gravity Imaging in Kyushu District, Southwest Japan;249
4.4;Gravity-Based Fault Mapping: The Ishikari Lowland, Hokkaido, Japan;255
4.5;Compilation and Evaluation of a Consistent Marine Gravity Data Set Surrounding Europe;261
4.6;Comparison of Downward Continuation Methods of Airborne Gravimetry Data;267
4.7;Optimisation of Density Parameter in Gravity Prediction from Bathymetry;272
4.8;Calibration and Validation of GOCE Gravity Gradients;278
4.9;Impact of space- borne gravity gradiometer instrument filter on observation error and gravity field recovery performance for GOCE;284
4.10;Testing frame-transformation, gridding and filtering of GOCE gradiometer data by Least- Squares Collocation using simulated data;290
4.11;PROCESSING OF CHAMP ACC AND RSO DATA IN THE EARTH GRAVITY FIELD DETERMINATION;296
4.12;One year of time- variable CHAMP- only gravity field models using kinematic orbits;301
4.13;Topographic- lsostatic Reductions in Satellite Gravity Gradiometry Based on a Generalized Condensation Model;307
4.14;Long-wavelength Discrepancies Between the Australian Gravity Field and EIGEN- 2 CHAMP Data;313
4.15;Computation of a geopotential model from GOCE data using fast spherical collocation - A simulation study;323
4.16;Improved Determination of Sea Surface Heights Close to the Australian Coast from ERS- 2 Satellite Radar Altimetry;327
4.17;A numerical study of solving the altimetry-gravimetry boundary value problem in coastal regions;333
4.18;Improved High Resolution Altimetric Gravity Field Mapping ( KMS2002 Global Marine Gravity Field);339
4.19;On the Determination of Marine Geoid Models by Least- Squares Collocation and Spectral Methods Using Heterogeneous Data;345
4.20;Progress towards implementation and develop-ment of a New Zealand national vertical datum;351
4.21;Prediction of Vertical Gravity Gradients Using Gravity and Elevation Data;357
4.22;Construction of a Synthetic Earth Gravity Model by Forward Gravity Modelling;363
4.23;First Results Towards An Isostatically Compensated Reference Earth Model;369
4.24;Towards the Estimation of a Multi-Resolution Representation of the Gravity Field Based on Spherical Wavelets;375
4.25;Stokes Integration versus Wavelet Techniques for Regional Geoid Modelling;381
4.26;A PRELIMINARY GEOID MODEL FOR AFRICA;387
4.27;Optimal Marine Geoid Determination in the Atlantic Coastal Region of Argentina;393
4.28;Comparison of Newton's Integral in the Space and Frequency Domains;399
4.29;Wavelet evaluation of some singular geodetic integrals;405
4.30;Gravimetric Geoid Determination in the Andes;411
4.31;On the Numerical Solution of Parameters of the Least Squares Modification of Stokes' Formula;416
4.32;A Numerical Comparison of Different Ellipsoidal Corrections to Stokes' Formula;422
5;General Theory and Methodology;428
5.1;ON TOTAL LEAST-SQUARES ADJUSTMENT WITH CONSTRAINTS;429
5.2;GNSS Best Integer Equivariant Estimation;434
5.3;Performance comparison of the BIE estimator with the float and fixed GNSS ambiguity estimators;440
5.4;Parametric versus non-parametric methods for optimal weighted averaging of noisy data sets;446
5.5;Estimation of Variance Components Through a Combined Adjustment of GPS, Geoid and Levelling Data;452
5.6;A minimum energy condition for the inverse gravimetric problem;458
5.7;Successive Approximations in the Solution of a Weakly Formulated Geodetic Boundary- Value Problem;464
5.8;Computation of geopotential coefficients from gravity anomalies on the ellipsoid;471
5.9;Advanced Harmonic Development of the Earth Tide Generating Potential;477
5.10;Global Isotropic Isostatic Response Function in Terms of Zonal Spherical Harmonics;483
5.11;Parana Basin: One isostatic modeling using a Geographic Information System to delineate the main basement structures;489
5.12;Patching local empirical covariance functions - A problem in altimeter data processing;495
5.13;Asymptotic Dislocation Theory of a Spherical Earth for Calculating Co- seismic Displacement;500
5.14;The Use of Energy Balance Relations for Validation of Gravity Field Models and Orbit Determination Results;506
5.15;Biharmonic Spline Wavelets versus Generalized Multi- quadrics for Continuous Surface Representations;512
5.16;An Energy Approach for Intelligent Structural Health Monitoring Using Wavelet Analysis;518
5.17;On Discrete Schemes in Downward Continuation of Gravity;524
5.18;Application of Clebsch-Gordan Coefficients and Isomorphic Frame Transformations to Invert Earth's Changing Geometrical Shape for Continental Hydrological Loading and Sea Level's Passive Response;530
5.19;Role of algebra in modern day Geodesy;536
6;Geodynamics;542
6.1;Mixed-mode GPS deformation monitoring - A cost-effective and accurate alternative?;543
6.2;Two examples of optimal design of geodynamic GPS networks;548
6.3;Deformation of the South American Crust Estimated from Finite Element and Collocation Methods;554
6.4;Present-day Movement and Tectonic Strain Rate Field of Active Crustai Blocks in China Continent;560
6.5;Crustal deformations at permanent GPS sites in Denmark;566
6.6;Monitoring Land Subsidence of Jakarta ( Indonesia) Using Leveling, GPS Survey and InSAR Techniques;571
6.7;Microgravity survey in the southern tip of the Atera fault, Central Japan;577
6.8;Geothermal Reservoir Monitoring with Absolute Gravimetry;581
6.9;Towards a rigorous combination of VLBI and GPS using the CONT02 campaign;586
6.10;Fuzzy Inference Systems for the Prediction of Earth Rotation Parameters;592
7;Insight into Earth System Science: Variations in the Earth's Rotation and its Gravity Field;598
7.1;Oceanic excitation of polar motion from intraseasonal to decadal periods;599
7.2;EXCITATIONS OF POLAR MOTION FROM AN ENSEMBLE OF GLOBAL ATMOSPHERIC MODELS;605
7.3;Sensitivity Analysis of the Non-Linear Liouville Equation;609
7.4;Filters to estimate water storage variations from GRACE;615
8;Author Index;620
9;Keyword Index;623