Abstract
Monthly gravity field solutions up to d/o 60 are derived by applying the Integrated (one-step) Approach of space geodesy, i.e. by simultaneously processing of the GPS constellation and the twin GRACE satellites. The results are based on latest GRACE RL05 standards (without constraining L3-ambiguities), and consists of 24-h arcs covering the test month April 2008 where the monthly solution was obtained by accumulation of the daily normal equations. The alternative gravity model is compared with the corresponding two-step solution derived by standard two-step GFZ RL05 GRACE processing (including constrained L3-ambiguities). It is shown, that difference degree amplitudes with respect to the static satellite-only model ITG-GRACE2010s for both the Integrated Approach and the two-step solution only differ significantly beyond d/o 17 where the two-step approach still performs slightly better. A great advantage of the Integrated Approach is the largely reduced formal errors indicating higher stochastic significance.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Blewitt G (1989) Carrier phase ambiguity resolution for the global positioning system applied to geodetic baselines up to 2000 km. J Geophys Res 94(B8):10187–10203
Dahle Ch, Flechtner F, Gruber Ch, König D, König R, Michalak G, Neumayer KH (2012) GFZ GRACE level-2 processing standards document for level-2 product release 0005 (ScientificTechnical Report - Data, 12/02, Revised Edition, January 2013), Potsdam, 21 p. doi:10.2312/GFZ.b103-1202-25
Ge M, Gendt G, Dick G, Zhang FP (2005) Improving carrier-phase ambiguity resolution in global GPS network solutions. J Geodesy 79(1–3):103–110. doi:10.1007/s00190-005-0447-0
König R, Reigber Ch, Zhu S (2005) Dynamic model orbits and Earth system parameters from combined GPS and LEO data. Adv Space Res 36: doi:10.1016/j.asr.2005.03.064, pp. 431-437
Mayer-Gürr T, Kurtenbach E, Eicker A (2010) The ITG-GRACE2010s gravity field. http://www.igg.uni-bonn.de/apmg/index.php?id=itg-grace2010
Zhu S, Reigber Ch, König R (2004) Integrated adjustment of CHAMP, GRACE and GPS data. J Geodesy 78(1–2):103–108
Acknowledgments
This work was done within project TOBACO-CHAMP/GRACE which was funded within the BMBF R&D-Programme GEOTECHNOLOGIEN with FKZ 03G0728A.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
König , D., Dahle, C. (2014). GRACE Gravity Modeling Using the Integrated Approach. In: Flechtner, F., Sneeuw, N., Schuh, WD. (eds) Observation of the System Earth from Space - CHAMP, GRACE, GOCE and future missions. Advanced Technologies in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32135-1_5
Download citation
DOI: https://doi.org/10.1007/978-3-642-32135-1_5
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-32134-4
Online ISBN: 978-3-642-32135-1
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)