Comparisons of Absolute Gravimeters as a Key Component of the International Terrestrial Gravity Reference Frame (ITGRF) Shown on the Example of the WET-CAG2021 at Wettzell, Germany

verfasst von

Hartmut Wziontek, Reinhard Falk, Vojtech Pálinkáš, Andreas Engfeldt, Julian Glässel, Andreas Hellerschmied, Domenico Iacovone, Jakub Kostelecky, Marvin Reich, Ludger Timmen, Christian Ullrich, Alessandro Valluzzi, Barbara Zehetmaier

Abstract

Comparisons of absolute gravimeters are essential to guarantee their traceability to the International System of Units (SI) and their compatibility and will be a key component of the upcoming International Terrestrial Gravity Reference Frame (ITGRF) of IAG. The results of the regional comparison of absolute gravimeters WET-CAG2021 hosted at the Geodetic Observatory Wettzell, Germany, in autumn 2021 are presented. Seven FG5/X absolute gravimeters and—for the first time—two commercial AQG absolute quantum gravimeters took part. Temporal gravity variations during the comparison period of 12 weeks were monitored with the superconducting gravimeter GWR OSG-030. The equivalence of each absolute gravimeter is evaluated against a common reference level derived from the measurements during this comparison period. Although the comparison is outside the scope of CIPM MRA it is linked to the EURAMET.M.G-K3 2018 at the same site and the CM.G-K2.2017 in Beijing, China, which ensures the traceability.

Organisationseinheit(en)

Institut für Erdmessung

Externe Organisation(en)

Bundesamt für Kartographie und Geodäsie (BKG)
Research Institute of Geodesy, Topography and Cartography, Czech Republic
Lantmäteriet (LM)
Bundesamt für Eich- und Vermessungswesen (BEV)
Italian Space Agency (ASI)
Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum (GFZ)

Typ

Aufsatz in Konferenzband

Seiten

29-36

Anzahl der Seiten

8

Publikationsdatum

2023

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Computer in den Geowissenschaften, Geophysik

Elektronische Version(en)

https://doi.org/10.1007/1345_2023_226 (Zugang: Offen)