Calibration/validation of GOCE data by terrestrial torsion balance observations

authored by: Gy Tóth, J. Ádám, L. Földvary, I. N. Tziavos, H. Denker
Abstract: One promising method for the external validation and calibration of the upcoming GOCE satellite mission data is the use of ground gravity field data continued upward to satellite altitude. There is a unique situation for Hungary in this respect since surface gravity gradients are available at 20143 points over an approximately 48700 km² area, measured by the classical Eötvös torsion balance. The concept of this contribution is to test the usability of these point gravity gradient observations for upward continuation to the GOCE satellite orbit in combination with different geopotential models and other gravity field information. The computations are based on the least squares collocation method and the direct numerical integration of the torsion balance data. For the latter method, the spectral combination technique and the classical integration kernels are considered. Furthermore, various other data sources, such as the Tzz gravity gradients based on the gravity and terrain data collected within the frame of the European Geoid Project, are utilized for comparisons. Besides the comparisons between the different satellite gravity gradient computations, an error analysis of the results is presented.
Organisation(s): Institute of Geodesy
External Organisation(s): Budapest University of Technology and Economics
Technical University of Munich (TUM)
Aristotle University of Thessaloniki (A.U.Th.)
Type: Conference contribution
Pages: 214-219
No. of pages: 6
Publication date: 2005
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computers in Earth Sciences, Geophysics
Electronic version(s): https://doi.org/10.1007/3-540-27432-4_37 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{e6ad4078a68f49e0b9e326bc12c3f920,
title = "Calibration/validation of GOCE data by terrestrial torsion balance observations",
abstract = "One promising method for the external validation and calibration of the upcoming GOCE satellite mission data is the use of ground gravity field data continued upward to satellite altitude. There is a unique situation for Hungary in this respect since surface gravity gradients are available at 20143 points over an approximately 48700 km2 area, measured by the classical E{\"o}tv{\"o}s torsion balance. The concept of this contribution is to test the usability of these point gravity gradient observations for upward continuation to the GOCE satellite orbit in combination with different geopotential models and other gravity field information. The computations are based on the least squares collocation method and the direct numerical integration of the torsion balance data. For the latter method, the spectral combination technique and the classical integration kernels are considered. Furthermore, various other data sources, such as the Tzz gravity gradients based on the gravity and terrain data collected within the frame of the European Geoid Project, are utilized for comparisons. Besides the comparisons between the different satellite gravity gradient computations, an error analysis of the results is presented.",
keywords = "E{\"o}tv{\"o}s{\textquoteright} torsion balance, GOCE, Upward continuation, Vertical gravity gradients",
author = "Gy T{\'o}th and J. {\'A}d{\'a}m and L. F{\"o}ldvary and Tziavos, {I. N.} and H. Denker",
note = "Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 2005. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; International Association of Geodesy, IAG 2003 ; Conference date: 30-06-2003 Through 11-07-2003",
year = "2005",
doi = "10.1007/3-540-27432-4_37",
language = "English",
isbn = "9783540240556",
series = "International Association of Geodesy Symposia",
publisher = "Springer Verlag",
pages = "214--219",
editor = "Fernando Sans{\`o}",
booktitle = "A Window on the Future of Geodesy",
address = "Germany",
}