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Performance evaluation of novel accelerometers for future gravimetry missions

Kupriyanov, Alexey and Reis, Arthur and Schilling, Manuel and Müller, Vitali and Müller, Jürgen (2023) Performance evaluation of novel accelerometers for future gravimetry missions. European Quantum Technologies Conference 2023, 2023-10-16 - 2023-10-20, Hannover.

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Abstract

Dedicated satellite gravimetry missions from the beginning of the 21-st century have provided unique data on mass redistribution processes in the Earth system, e.g., melting of the Antarctic and Greenland ice sheets, sea level changes, droughts, etc. Ongoing climate change underlines the need to continue this kind of measurements with enhanced concepts and sensors. For example, the Mass Change mission is planned to be launched within the next decade in a DLR-NASA partnership. The focus of this study is on the assessment of enhanced ACCs for future gravimetry missions. Drifts of the electrostatic accelerometers (EA) at low frequencies (< 1mHz) are one of the limiting factors in current space gravimetry missions. For this purpose, an enhanced EA with laser-interferometric readout, a so called "optical accelerometer", was modeled and its performance at Low Earth Orbit has been evaluated. Contrary to present-day EAs, which measure capacitively the test mass (TM) displacement and actuate it electrostatically, optical ACC, beside a similar actuation scheme, track the TM with laser interferometry. Here, we introduce general workflow of simulations including the propagation of the satellite dynamics and the modeling of optical ACCs including major noise sources. Also, parametrization of the developed ACC model will be discussed including the effect of different TM weights and TM-electrode housing gaps. Finally, improved results of the recovered gravity field will be shown for various mission scenarios applying optical accelerometry and gradiometry and which are compared to the present-day EAs and quantum sensors performance.

Item URL in elib:https://elib.dlr.de/200910/
Document Type:Conference or Workshop Item (Poster)
Title:Performance evaluation of novel accelerometers for future gravimetry missions
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kupriyanov, AlexeyInstitut für Erdmessung, Leibniz Universität Hannover, Germanyhttps://orcid.org/0000-0002-0743-5889UNSPECIFIED
Reis, ArthurMax Planck Institute for Gravitational Physics, Hannoverhttps://orcid.org/0000-0002-6682-5457UNSPECIFIED
Schilling, ManuelUNSPECIFIEDhttps://orcid.org/0000-0002-9677-0119UNSPECIFIED
Müller, VitaliMax-Planck-Institut für Gravitationsphysik, HannoverUNSPECIFIEDUNSPECIFIED
Müller, JürgenInstitut für Erdmessung, Leibniz Universität Hannover, Germanyhttps://orcid.org/0000-0003-1247-9525UNSPECIFIED
Date:2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:GRACE, accelerometer, quantum sensor, interferometer
Event Title:European Quantum Technologies Conference 2023
Event Location:Hannover
Event Type:international Conference
Event Start Date:16 October 2023
Event End Date:20 October 2023
Organizer:Quantum Flagship
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 - Inertial Sensing for Space Applications
Location: Hannover
Institutes and Institutions:Institute for Satellite Geodesy and Inertial Sensing > Satellite Geodesy and Geodetic Modelling
Deposited By: Schilling, Manuel
Deposited On:09 Jan 2024 16:29
Last Modified:24 Apr 2024 21:01

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