Geodetic Reference Frames (eBook)

Preface 6
Contents 7
Session 1 Combination of Space Techniques Convenor: M. Rothacher 12
Combination of Earth Orientation Parameters and Terrestrial Frame at the Observation Level 13
DGFI Combination Methodology for ITRF2005 Computation 20
Combining One Year of Homogeneously Processed GPS, VLBI and SLR Data 26
Inverse Model Approach for Vertical Load Deformations in Consideration of Crustal Inhomogeneities 32
Station Coordinates and Low Degree Harmonics with Daily Resolution from a GPS/CHAMP Integrated Solution Solution and with Weekly Resolution from a LAGEOS-only 39
Rigorous Variance Component Estimation in Weekly Intra-Technique and Inter- 
47 
Assessment of the Results of VLBI Intra-Technique Combination Using Regularization Methods 53
Session 2 Global Reference Frames Convenor: C. Boucher 60
Contribution of Lunar Laser Ranging to Realise Geodetic Reference Systems 61
Vienna VLBI Simulations 66
Towards an Improved Assessment of the Quality of Terrestrial Reference Frames 71
Strengthes and Limitations of the ITRF: ITRF2005 and Beyond 77
The International Terrestrial Reference Frame (ITRF2005) 84
Effects of Different Antenna Phase Center Models on GPS-Derived Reference Frames 86
Influence of Time Variable Effects in Station Positions on the Terrestrial Reference Frame 92
The Actual Plate Kinematic and Crustal Deformation Model APKIM2005 as Basis for a Non-Rotating ITRF 97
Control Measurements Between the Geodetic Observation Sites at Metsähovi 102
VLBI-GPS Eccentricity Vectors at Medicina's Observatory via GPS Surveys: Reproducibility, Reliability and Quality Assessment of the Results 108
Session 3 Regional Reference Frames Convenor: Z. Altamimi 114
The Practical Implications and Limitations of the Introduction of a Semi-Dynamic Datum – A New Zealand Case Study 115
Evaluation of Analysis Options for GLONASS Observations in Regional GNSS Networks 121
The European Reference Frame: Maintenance and Products 130
The EUREF Permanent Network: Monitoring and On-line Resources 136
Noise and Periodic Terms in the EPN Time Series 142
Long-Term Densification of Terrestrial Reference Frame in Central Europe as the Result of Central Europe Regional Geodynamic Project 1994-2006 148
A First Estimate of the Transformation Between the Global IGS and the Italian ETRF89-IGM95 Reference Frames for the Italian Peninsula 154
Achievements and Challenges of SIRGAS 160
The Position and Velocity Solution DGF06P01 for SIRGAS 166
Using an Artificial Neural Network to Transformation of Coordinates from PSAD56 to SIRGAS95 172
CPLat: the Pilot Processing Center for SIRGAS in Argentine 178
Realization of the SIRGAS Reference Frame in Colombia 183
Seasonal Position Variations and Regional Reference Frame Realization 189
IGS/EPN Reference Frame Realization in Local GPS Networks 195
Systematical Analysis of the Krueger-Coordinate/DHDN and UTM-Coordinate/ETRS89 in Baden-Württemberg with Different Estimation Methods Transformation Between Gauss- 202
Empirical Affine Reference Frame Transformations by Weighted Multivariate TLS Adjustment 209
Modified Sidereal Filtering – Tool for the Analysis of High-Rate GPS Coordinate Time Series 215
Questioning the Need of Regional Reference Frames 221
Session 4 Interaction of Terrestrial and Celestial Frames Convenor: H. Schuh 227
Empirical Earth Rotation Model: a Consistent Way to Evaluate Earth Orientation Parameters 228
A Quasi-Optimal, Consistent Approach for Combination of UT1 and LOD 234
The Effect of M eteorological Input Data on the VLBI Reference Frames 239
Estimation of UT1 Variations from Atmospheric Pressure Data 246
Various Definitions of the Ecliptic 252
Session 5 Vertical Reference Frames Convenor: J. Ihde 263
Strategy to E stablish a Global Vertical Reference System 264
GPS Gravity-potential Leveling 270
The Role of the TIGA P roject in the Unification of Classical Height Systems 275
Challenges and First Results Towards the Realization of a Consistent Height System in Brazil 281
The New Finnish Height Reference N2000 287
Heights in the Bavarian Alps: Mutual Validation of GPS, Levelling, Gravimetric and Astrogeodetic Quasigeoids 293
Session 6 Atmosphere Modelling and Analysis Convenor: M. Schmidt 299
Residual Analysis of Global Ionospheric Maps U sing Modip Latitude 300
Neutral Atmosphere D elays: Empirical Models V ersus Discrete Time Series from Numerical Weather Models 306
Author Index 311