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Reference mirror misalignment of cold atom interferometers on satellite-based gravimetry missions

Meister, Jaspar and Bremer, Stefanie and HosseiniArani, Alireza and Leipner, Andreas and List, Meike and Müller, Jürgen and Schilling, Manuel (2022) Reference mirror misalignment of cold atom interferometers on satellite-based gravimetry missions. International Astronautical Congress 2022, 2022-09-18 - 2022-09-22, Paris, Frankreich.

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The success of GRACE-FO and its predecessors has demonstrated the benefits of satellite gravimetry for monitoring mass variations on the Earth’s surface and its interior. However, the demand for increasingly higher spatial and temporal resolution of gravity field solutions has brought into focus the need for next-generation gravimetry missions (NGGMs). Therefore, we investigate the hybridization of electrostatic accelerometers (E-ACC) with cold atom interferometers (CAI), which can reduce the instrumental error contribution of the E-ACC, e.g. by enabling in-flight estimation of E-ACC bias parameters, and reduce systematic effects in gravity field solutions by proving drift free measurements. However, these sensors introduce more stringent requirements on the computation of environmental disturbances in lower Earth orbits, as the alignment of the CAI’s reference mirror has to be controlled precisely. Therefore, the movement of the CAI’s reference mirror inside the satellite is analyzed using the Hybrid Simulation Platform for Space Systems (HPS) developed by DLR and ZARM (University of Bremen). Misalignments and vibrations of the reference mirror cause an additional CAI phase shift, which introduces measurement inaccuracies. Our work examines the translational displacement, rotational misalignment and angular velocity of the reference mirror, due to forces transferred by the coupling link between mirror and satellite. This helps to compare different hybridization concepts and to improve noise and signal models for CAI accelerometers.

Item URL in elib:https://elib.dlr.de/188580/
Document Type:Conference or Workshop Item (Poster)
Title:Reference mirror misalignment of cold atom interferometers on satellite-based gravimetry missions
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Meister, JasparUNSPECIFIEDhttps://orcid.org/0000-0002-2835-595XUNSPECIFIED
Bremer, StefanieUNSPECIFIEDhttps://orcid.org/0000-0002-8091-0121UNSPECIFIED
HosseiniArani, AlirezaInstitut für Erdmessung, Leibniz Universität Hannoverhttps://orcid.org/0000-0002-5080-7094UNSPECIFIED
Leipner, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-1317-9447UNSPECIFIED
List, MeikeUNSPECIFIEDhttps://orcid.org/0000-0002-5268-5633UNSPECIFIED
Müller, JürgenInstitut für Erdmessung, Leibniz Universität Hannoverhttps://orcid.org/0000-0003-1247-9525UNSPECIFIED
Schilling, ManuelUNSPECIFIEDhttps://orcid.org/0000-0002-9677-0119UNSPECIFIED
Date:September 2022
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:accelerometer, simulation, cold atom interferometer
Event Title:International Astronautical Congress 2022
Event Location:Paris, Frankreich
Event Type:international Conference
Event Start Date:18 September 2022
Event End Date:22 September 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Virtual Development Environment Quantum Sensors
Location: Bremen
Institutes and Institutions:Institute for Satellite Geodesy and Inertial Sensing > Relativistic Modelling
Institute for Satellite Geodesy and Inertial Sensing > Satellite Geodesy and Geodetic Modelling
Deposited By: Meister, Jaspar
Deposited On:29 Sep 2022 17:11
Last Modified:24 Apr 2024 20:49

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