Geodesy Beyond 2000

In this volume, the state of the art in geodesy is presented with special emphasis on the challenges of the next decade. It is subdivided into six parts. The first five parts discuss the challenges of providing a stable global reference at the parts per billion level by space methods, the impact of recently approved dedicated satellite missions on the determination of a high resolution global gravity field and its refinements by airborne gravity, advances in geodynamics and their impact on the monitoring of seismic hazards and earthquake prediction, the increasing use of GPS and INS in kinematic mode for mapping the Earth's surface and monitoring the behaviour of large man-made structures, and the related advances in mathematical theory and numerical techniques. The last part is dedicated to the discussion of a new structure for IAG to meet these challenges.

Contenu

1: Modelling the Earth at the Part per Billion Level.- Earth scale below a part per billion from Satellite Laser Ranging.- Long-term stability of altimetric data with applications to mean sea-level change.- CORE: Continuous, high accuracy Earth orientation measurements for the new millennium (extended abstract).- The IGEX-98 campaign: Highlights and perspective.- Computation of precise GLONASS orbits for IGEX-98.- Ocean loading tides in GPS and rapid variations of the frame origin.- Use of GPS carrier phase for high precision frequency (time) comparison.- The European Reference System coming of age.- Status and development of the European height system.- 2: Seamless Gravity.- Recovering the global gravitational field from satellite measurements of the full gravity gradient.- Data analysis for the GOCE mission.- Direct and local comparison between different satellite missions for the gravity field on-the-fly.- Calibration/validation methods for GRACE.- The 1999 GFZ pre-CHAMP high resolution gravity model.- Comparison and evaluation of the new Russian global geopotential model to degree 360.- Assessing the global land one-km base elevation DEM.- Recent advances in the acquisition and use of terrain data for geoid modelling over the United States.- Geoid modelling in coastal regions using airborne and satellite data: Case study in the Azores.- Airborne gravity field surveying for oceanography, geology and geodesy - the experiences from AGMASCO.- A comparison of stable platform and strapdown airborne gravity (extended abstract).- The NRL airborne geophysics program.- On the modelling of long wavelength systematic errors in surface gravimetric data.- Investigation of different methods for the combination of gravity and GPS/levelling data.- The regional geopotential model to degree and order 720 in China.- Gravity field and geoid for Japan.- The dual sphere superconducting gravimeter GWR CD029 at Frankfurt a.M. and Wettzell - first results and calibration.- 3: Advances in Theory and Numerical Techniques.- Direct methods in physical geodesy.- A general least-squares solution of the geodetic boundary value problem.- On an O(N) algorithm for the solution of geodetic boundary value problems.- The multigrid method for satellite gravity field recovery.- Numerical realization of a new iteration procedure for the recovery of potential coefficients.- Improved analytical approximations of the Earth2's gravitational field.- Sparse preconditioners of Gram's matrices in the conjugate gradient method.- A wavelet approach to non-stationary collocation.- Wavelets and collocation: An interesting similarity.- On the wavelet determination of scale exponents in energy spectra and structure functions and their application to CCD camera data.- The use of wavelets for the analysis and de-noising of kinematic geodetic measurements.- A theorem of insensitivity of the collocation solution to variations of the metric of the interpolation space.- Biases and accuracy of, and an alternative to discrete nonlinear filters (extended abstract).- Are GPS data normally distributed?.- On the precision and reliability of near real-time GPS phase observations ambiguities.- 4: Geodynamics.- Degree-one deformations of the Earth.- Geodynamics from the analysis of the mean orbital motion of geodetic satellites.- Geodynamics of S.E. Asia: First results of the Sulawesi 1998 GPS campaign.- Four-dimensional geodesy: Time dependent inversion for earthquake and volcanic sources (extended abstract).- An interdisciplinary approach to studying seismic hazard throughout Greece.- Crustal deformation monitoring of volcanoes in Japan using L-band SAR interferometry.- The sea surface of the Baltic - a result from the Baltic Sea Level Project (IAG SSC 8.1).- Preliminary study of a block rotation model in North China area using GPS measurements.- Realization of a terrestrial reference frame for large-scale GPS networks.- 5: Kinematic Systems and Precision Engineering.- Building structures as kinematic systems - dynamic monitoring and system analysis.- Mobile multi-sensor systems: The new trend in mapping and GIS applications.- Adaptive Kalman filtering for integration of GPS with GLONASS and INS.- A GPS/INS/Imaging system for kinematic mapping in fully digital mode.- GPS-based attitude determination for airborne remote sensing.- Absolute kinematic GPS positioning using satellite clock estimation every 1 second.- GNSS long baseline ambiguity resolution: Impact of a third navigation frequency.- Monitoring the height deflections of the Humber Bridge by GPS, GLONASS, and finite element modeling.- Continuously operating GPS-based volcano deformation monitoring in Indonesia: the technical and logistical challenges.- A national network of continuously operating GPS receivers for the UK.- The impact of the atmosphere and other systematic errors on permanent GPS networks.- Re-weighting of GPS baselines for vertical deformation analysis.- Stochastic modelling of the ionosphere for fast GPS ambiguity resolution.- Mitigating multipath errors using semi-parametric models for high precision static positioning.- Geotechnical exploration - wider fields of activities for geodesists and geophysicists.- 6: An IAG Structure to Meet Future Challenges.- An analysis of the current IAG structure and some thoughts on an IAG focus.- The pros and cons of having sections in IAG.- IAG services in the current framework of the International Association of Geodesy (IAG).- The role of IAG Special Study Groups.- Scientific services in support of research in geodesy and geodynamics.- Reflections on a new structure for IAG Beyond 2000 - conclusions from the IAG Section II Symposium in Munich.- Author Index.- Keyword Index.