Absolute Quantum Gravimeter comparison at Borowa Góra Geodetic-Geophysical Observatory
Between the days of 5 to 16 May 2025, an absolute gravimeter comparison was performed at Borowa Góra Geodetic-Geophysical Observatory in Poland. Participants include instruments and representatives from Institute of Geodesy and Cartography (Warsaw, Poland), Federal Agency of Geodesy and Cartography (Leipzig, Germany), Epos-France LNE-OP/LTE (Paris, France), GFZ Helmholtz Centre for Geosciences (Potsdam, Germany), Leibniz Institute for Applied Geophysics (Hannover, Germany) and for technical suport, Exail (Bordeux, France). In total comparison included four AQG type B gravimeters (manufactured by French company Exail). Unfortunately due to technical reasons the AQG-B07 unit of IGiK could not participate in the comparison. Additionally the comparison was supplemented by one FG5 gravimeter, A10 gravimeter, two CG6 relative gravimeters and an iGrav superconducting gravimeter recording continiously at BG Observatory. Measurements were organised in two one week long sessions. Comparison, primarly oriented for Absolute Quantum Gravimeters, was organised by Institute of Geodesy and Cartography (Warsaw, Poland) in the framework of the QuGrav project founded within the Innoglobo III program by the The National Centre for Research and Development in Poland. This is a second this kind of comparison focused on AQG gravimeters after the one carried out in January of 2024 in Hannover, Germany. On the side, meeting allowed to have extensive in deep discussions on AQG gravimeters operation protocols and good practices as well as on past, present and upcoming activities within the teams. Institute of Geodesy and Cartography Team: Przemyslaw Dykowski (QuGrav Project Leader), Adam Ciesielski, Marcin Sękowski Instruments: A10-020, iGrav-027 Federal Agency of Geodesy and Cartography Team: Andre Gebauer, Erik Brachman Instruments: AQG-B10, FG5-301, 2x Scintrex CG6 Leibniz Institute for Applied Geophysics Team: Mohamed Sobh, Jan Bergman Instruments: AQG-B09 Epos-France LNE-OP/LTE Team: Sebastien Merlet Instruments: AQG-B01 GFZ Helmholtz Centre for Geosciences, Hydrology Team: Marvin Reich, Heiko Thoss Instruments: AQG-B02 Exail, Quantum Sensors Team: Simon Templier, Romain Gautier #gravimeter, #NCBR, #quantum, #Exail, #LIAG Institute for Applied Geophysics, #Epos-France, #GFZ Helmholtz-Zentrum für Geoforschung, #Bundesamt für Kartographie und Geodäsie (BKG), #Exail - Photonics