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Conference Paper

Impact of a priori gravity field models on SLR data processing

Authors

Geisser,  Linda
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Meyer,  Ulrich
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Arnold,  Daniel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Jäggi,  Adrian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Geisser, L., Meyer, U., Arnold, D., Jäggi, A. (2023): Impact of a priori gravity field models on SLR data processing, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3835


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020710
Abstract
Satellite Laser Ranging (SLR) data can be processed to estimate geodetic parameters, i.e., the Earth Rotation Parameters (ERPs), station coordinates or low-degree spherical harmonic coefficients of the Earth's gravity field. The satellite orbits are determined in 7-day arcs together with geodetic and instrument parameters. However, the quality of these orbits strongly depends on the accuracy of the background models, e.g., the a priori Earth's gravity field. In this study, SLR analyses are validated, where different a priori gravity field models are used. These include static and time-variable products provided by the Center for Space Research (CSR), the International Laser Ranging Service (ILRS) and the Combination Service for Time-variable Gravity Fields (COST-G). The impact of the background models on the SLR data processing is analyzed by comparing the estimated parameters with internal and external quality metrics.