Lasser, Martin; Meyer, Ulrich; Arnold, Daniel; Jäggi, Adrian (2020). Stochastic noise modelling of kinematic orbit positions in the Celestial Mechanics Approach. Advances in geosciences, 50, pp. 101-113. Copernicus Publications 10.5194/adgeo-50-101-2020
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Benchmark data for verifying background model implementations in orbit and gravity field determination software In the framework of the COmbination Service for Time-variable Gravity fields (COST-G) gravity field solutions from different analysis centres are combined to provide a consolidated solution of improved quality and robustness to the user. As in many other satellite-related sciences, the correct application of background models plays a crucial role in gravity field determination. Therefore, we publish a set of data of various commonly used forces in orbit and gravity field modelling (Earth’s gravity field, tides etc.) evaluated along a one day orbit arc of GRACE, together with auxiliary data to enable easy comparisons. The benchmark data is compiled with the GROOPS software by the Institute of Geodesy (IfG) at Graz University of Technology. It is intended to be used as a reference data set and provides the opportunity to test the implementation of these models at various institutions involved in orbit and gravity field determination from satellite tracking data. In view of the COST-G GRACE and GRACE Follow-On gravity field combinations, we document the outcome of the comparison of the background force models for the Bernese GNSS software from AIUB (Astronomical Institute, University of Bern), the EPOS software of the German Research Centre for Geosciences (GFZ), the GINS software, developed and maintained by the Groupe de Recherche de Géodésie Spatiale (GRGS), the GRACE-SIGMA software of the Leibniz University of Hannover (LUH) and the GRASP software also developed at LUH. We consider differences in the force modelling for GRACE (-FO) which are one order of magnitude smaller than the accelerometer noise of about 10⁻10 ms⁻² to be negligible and formulate this as a benchmark for new analysis centres, which are interested to contribute to the COST-G initiative.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Astronomy |
UniBE Contributor: |
Lasser, Martin, Meyer, Ulrich, Arnold, Daniel, Jäggi, Adrian |
Subjects: |
500 Science > 520 Astronomy |
ISSN: |
1680-7340 |
Publisher: |
Copernicus Publications |
Language: |
English |
Submitter: |
Pierre Fridez |
Date Deposited: |
15 Nov 2021 12:14 |
Last Modified: |
05 Dec 2022 15:54 |
Publisher DOI: |
10.5194/adgeo-50-101-2020 |
BORIS DOI: |
10.48350/160519 |
URI: |
https://boris.unibe.ch/id/eprint/160519 |
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