Abstract
We present the first gravity field model AIUB-GRACE01S, which has been generated using the Celestial Mechanics Approach in an extended version. Inter-satellite K-band range-rate observations and GPS-derived kinematic positions are used to solve for the Earth’s gravity field parameters in a generalized orbit determination problem. Apart from the normalized spherical harmonic (SH) coefficients, arc-specific parameters like initial conditions and pseudo-stochastic pulses are set up as common parameters for all measurement types. Our first results based on 1 year of GRACE data demonstrate that the Earth’s static gravity field can be recovered with a good quality, even using EGM96 as a priori model and without accelerometer data and sophisticated background models like short-term mass variations. The use of accelerometer data and sophisticated background models will be a prerequisite for the near future, however, to further improve the inferred gravity field solutions.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Beutler, G. (2005) Methods of celestial mechanics. Springer, Berlin, Heidelberg, New York.
Case, K., G. Kruizinga and S. Wu (2002). GRACE Level 1B Data Product User Handbook. D-22027, JPL Publication, Pasadena, California, USA.
CSR ocean tide model from Schwiderski (1995). http://ftp://ftp.csr.utexas.edu/pub/tide/oldfiles/spharm_schwid+
Eanes, R.J., and S.V. Bettadpur (1995). The CSR 3.0 global ocean tide model. Technical Memorandum 95-06, Center for Space Research, University of Texas, Austin.
Flechtner, F., R. Schmidt, and U. Meyer (2006). De-aliasing of short-term atmospheric and oceanic mass variations for GRACE. In: Flury, J., R. Rummel, C. Reigber, M. Rothacher, G. Boedecker, and U. Schreiber (eds), Observation of the earth system from space. Springer, Heidelberg, pp. 83–97.
Förste, C., R. Schmidt, R. Stubenvoll, F. Flechtner, U. Meyer, R. König, U. Meyer, H. Neumayer, R. Biancale, J.M. Lemoine, S. Bruinsma, S. Loyer, F. Barthelmes, and S. Esselborn (2008). The GeoForschungsZentrum Potsdam/Groupe de Recherche de Géodésie Spatiale satellite-only and combined gravity field models: EIGEN-GL04S1 and EIGEN-GL04C. J. Geod. 82, 331–346.
Gruber, T. (2004) Validation Concepts for Gravity Field Models from Satellite Missions. In: Proceedings of Second International GOCE User Workshop “GOCE, The Geoid and Oceanography”, ESA-ESRIN, Frascati, Italy.
Heiskanen, W.A. and H. Moritz (1967). Physical Geodesy. Freeman.
Jäggi, A., U. Hugentobler and G. Beutler (2006). Pseudo-stochastic orbit modeling techniques for low-Earth orbiters. J. Geod., 80, 47–60.
Jäggi, A., G. Beutler, L. Prange, R. Dach, and L. Mervart (2008). Assessment of GPS observables for Gravity Field Recovery from GRACE. In: Sideris, M.G. (ed), Observing our Changing Earth. Springer, Heidelberg, pp. 113–120.
Lemoine, F.G., D.E. Smith, L. Kunz, R. Smith, E.C. Pavlis, N.K. Pavlis, S.M. Klosko, D.S. Chinn, M.H. Torrence, R.G. Williamson, C.M. Cox, K.E. Rachlin, Y.M. Wang, S.C. Kenyon, R. Salman, R. Trimmer, R.H. Rapp, and R.S. Nerem (1997). The development of the NASA GSFC and NIMA joint geopotential model. In: Segawa, J., H. Fujimoto, and S. Okubo (eds), IAG Symposia: Gravity, Geoid and Marine Geodesy. Springer-Verlag, New York, pp. 461–469.
Mayer-Gürr, T. (2008). Gravitationsfeldbestimmung aus der Analyse kurzer Bahnbögen am Beispiel der Satellitenmissionen CHAMP und GRACE. Schriftenreihe 9, Institute for Geodesy and Geoinformation, University of Bonn, Germany.
Prange, L., A. Jäggi, G. Beutler, R. Dach, L. Mervart (2008). Gravity Field Determination at the AIUB – the Celestial Mechanics Approach. In: Sideris, M.G. (ed), Observing our Changing Earth. Springer, Heidelberg, pp. 353–360.
Ray, R.D. (1999). A global ocean tide model from TOPEX/Poseidon altimetry: GOT99.2. NASA Tech Memo 209478, Goddard Space Flight Center, Greenbelt.
Tapley, B.D., S. Bettadpur, J.C. Ries, P.F. Thompson, and M. Watkins (2004). GRACE measurements of mass variability in the Earth system. Science, 305(5683).
Acknowledgements
The authors gratefully acknowledge the generous support provided by the Technical University of Munich’s Institute for Advanced Study (IAS) in the frame of the project “Satellite Geodesy”.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Jäggi, A., Beutler, G., Mervart, L. (2010). GRACE Gravity Field Determination Using the Celestial Mechanics Approach – First Results. In: Mertikas, S. (eds) Gravity, Geoid and Earth Observation. International Association of Geodesy Symposia, vol 135. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10634-7_24
Download citation
DOI: https://doi.org/10.1007/978-3-642-10634-7_24
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-10633-0
Online ISBN: 978-3-642-10634-7
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)