Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Astronautical Congress, IAC |
| Publication status | Published - 2022 |
| Event | 73rd International Astronautical Congress, IAC 2022 - Paris, France Duration: 18 Sept 2022 → 22 Sept 2022 |
Publication series
| Name | Proceedings of the International Astronautical Congress, IAC |
|---|---|
| Volume | 2022-September |
| ISSN (Print) | 0074-1795 |
Abstract
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.
Keywords
- accelerometer, cold atom interferometer, simulation
ASJC Scopus subject areas
- Engineering(all)
- Aerospace Engineering
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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Proceedings of the International Astronautical Congress, IAC. 2022. 190266 (Proceedings of the International Astronautical Congress, IAC; Vol. 2022-September).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Reference Mirror Misalignment of Cold Atom Interferometers on Satellite-Based Gravimetry Missions
AU - Meister, Jaspar
AU - Bremer, Stefanie
AU - HosseiniArani, Alireza
AU - Leipner, Andreas
AU - List, Meike
AU - Müller, Jürgen
AU - Schilling, Manuel
N1 - Funding Information: Andreas Leipner acknowledges funding from the CRC 1464 TerraQ: Relativistic and quantum-based geodesy (Deutsche Forschungsgemeinschaft (DFG) – Project number 434617780).
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
KW - accelerometer
KW - cold atom interferometer
KW - simulation
KW - accelerometer
KW - cold atom interferometer
KW - Simulationen
UR - http://www.scopus.com/inward/record.url?scp=85167564201&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85167564201
T3 - Proceedings of the International Astronautical Congress, IAC
BT - Proceedings of the International Astronautical Congress, IAC
T2 - 73rd International Astronautical Congress, IAC 2022
Y2 - 18 September 2022 through 22 September 2022
ER -