Details
| Original language | English |
|---|---|
| Title of host publication | International Association of Geodesy Symposia |
| Editors | Jeffrey T. Freymueller, Laura Sánchez |
| Place of Publication | Berlin |
| Publisher | Springer Nature |
| Chapter | 151 |
| Pages | 213-220 |
| Number of pages | 8 |
| ISBN (print) | 9783031295065 |
| Publication status | Published - 17 Aug 2022 |
Publication series
| Name | International Association of Geodesy Symposia |
|---|---|
| Volume | 154 |
| ISSN (Print) | 0939-9585 |
| ISSN (electronic) | 2197-9359 |
Abstract
Satellite gravity missions, like GRACE and GRACE Follow-On, successfully map the Earth’s gravity field and its change over time. With the addition of the laser ranging interferometer (LRI) to GRACE-FO, a significant improvement over GRACE for inter-satellite ranging was achieved. One of the limiting factors is the accelerometer for measuring the non-gravitational forces acting on the satellite. The classical electrostatic accelerometers are affected by a drift at low frequencies. This drawback can be counterbalanced by adding an accelerometer based on cold atom interferometry (CAI) due to its high long-term stability. The CAI concept has already been successfully demonstrated in ground experiments and is expected to show an even higher sensitivity in space. In order to investigate the potential of the CAI concept for future satellite gravity missions, a closed-loop simulation is performed in the context of GRACE-FO like missions. The sensitivity of the CAI accelerometer is estimated based on state-of-the-art ground sensors and predictions for space applications. The sensor performance is tested for different scenarios and the benefits to the gravity field solutions are quantitatively evaluated. It is shown that a classical accelerometer aided by CAI technology improves the results of the gravity field recovery especially in reducing the striping effects. The non-gravitational accelerations are modelled using a detailed surface model of a GRACE-like satellite body. This is required for a realistic determination of the variations of the non-gravitational accelerations during one interferometer cycle. It is demonstrated that the estimated error due to this variation is significant. We consider different orbit altitudes and also analyze the effect of drag compensation.
Keywords
- Closed-loop simulation, cold atom interferometry, cold atom interferometer acceleration, future satellite gravity missions, Future satellite gravity missions, Cold atom interferometer accelerometry
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
- Geophysics
Research Area (based on ÖFOS 2012)
- NATURAL SCIENCES
- Geosciences
- Geology, Mineralogy
- Gravimetry
- NATURAL SCIENCES
- Physics, Astronomy
- Physics, Astronomy
- Atomic physics
- TECHNICAL SCIENCES
- Environmental Engineering, Applied Geosciences
- Geodesy, Surveying
- Satellite geodesy
Sustainable Development Goals
Cite this
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International Association of Geodesy Symposia. ed. / Jeffrey T. Freymueller; Laura Sánchez. Berlin: Springer Nature, 2022. p. 213-220 (International Association of Geodesy Symposia; Vol. 154).
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - The Benefit of Accelerometers Based on Cold Atom Interferometry for Future Satellite Gravity Missions
AU - Knabe, Annike
AU - Schilling, Manuel
AU - Wu, Hu
AU - Hosseiniarani, Alireza
AU - Müller, Jürgen
AU - Beaufils, Quentin
AU - Pereira Dos Santos, Franck
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2022/8/17
Y1 - 2022/8/17
N2 - Satellite gravity missions, like GRACE and GRACE Follow-On, successfully map the Earth’s gravity field and its change over time. With the addition of the laser ranging interferometer (LRI) to GRACE-FO, a significant improvement over GRACE for inter-satellite ranging was achieved. One of the limiting factors is the accelerometer for measuring the non-gravitational forces acting on the satellite. The classical electrostatic accelerometers are affected by a drift at low frequencies. This drawback can be counterbalanced by adding an accelerometer based on cold atom interferometry (CAI) due to its high long-term stability. The CAI concept has already been successfully demonstrated in ground experiments and is expected to show an even higher sensitivity in space. In order to investigate the potential of the CAI concept for future satellite gravity missions, a closed-loop simulation is performed in the context of GRACE-FO like missions. The sensitivity of the CAI accelerometer is estimated based on state-of-the-art ground sensors and predictions for space applications. The sensor performance is tested for different scenarios and the benefits to the gravity field solutions are quantitatively evaluated. It is shown that a classical accelerometer aided by CAI technology improves the results of the gravity field recovery especially in reducing the striping effects. The non-gravitational accelerations are modelled using a detailed surface model of a GRACE-like satellite body. This is required for a realistic determination of the variations of the non-gravitational accelerations during one interferometer cycle. It is demonstrated that the estimated error due to this variation is significant. We consider different orbit altitudes and also analyze the effect of drag compensation.
AB - Satellite gravity missions, like GRACE and GRACE Follow-On, successfully map the Earth’s gravity field and its change over time. With the addition of the laser ranging interferometer (LRI) to GRACE-FO, a significant improvement over GRACE for inter-satellite ranging was achieved. One of the limiting factors is the accelerometer for measuring the non-gravitational forces acting on the satellite. The classical electrostatic accelerometers are affected by a drift at low frequencies. This drawback can be counterbalanced by adding an accelerometer based on cold atom interferometry (CAI) due to its high long-term stability. The CAI concept has already been successfully demonstrated in ground experiments and is expected to show an even higher sensitivity in space. In order to investigate the potential of the CAI concept for future satellite gravity missions, a closed-loop simulation is performed in the context of GRACE-FO like missions. The sensitivity of the CAI accelerometer is estimated based on state-of-the-art ground sensors and predictions for space applications. The sensor performance is tested for different scenarios and the benefits to the gravity field solutions are quantitatively evaluated. It is shown that a classical accelerometer aided by CAI technology improves the results of the gravity field recovery especially in reducing the striping effects. The non-gravitational accelerations are modelled using a detailed surface model of a GRACE-like satellite body. This is required for a realistic determination of the variations of the non-gravitational accelerations during one interferometer cycle. It is demonstrated that the estimated error due to this variation is significant. We consider different orbit altitudes and also analyze the effect of drag compensation.
KW - Closed-loop simulation
KW - cold atom interferometry
KW - cold atom interferometer acceleration
KW - future satellite gravity missions
KW - Closed-loop simulation
KW - cold atom interferometry
KW - cold atom interferometer acceleration
KW - future satellite gravity missions
KW - Future satellite gravity missions
KW - Cold atom interferometer accelerometry
UR - http://www.scopus.com/inward/record.url?scp=85172672208&partnerID=8YFLogxK
U2 - 10.1007/1345_2022_151
DO - 10.1007/1345_2022_151
M3 - Contribution to book/anthology
SN - 9783031295065
T3 - International Association of Geodesy Symposia
SP - 213
EP - 220
BT - International Association of Geodesy Symposia
A2 - Freymueller, Jeffrey T.
A2 - Sánchez, Laura
PB - Springer Nature
CY - Berlin
ER -