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dc.contributor.author
Goswami, Sujata
dc.contributor.author
Francis, Samuel P.
dc.contributor.author
Bandikova, Tamara
dc.contributor.author
Spero, Robert E.
dc.date.accessioned
2023-04-04T12:18:14Z
dc.date.available
2021-09-17T04:35:41Z
dc.date.available
2021-10-01T13:49:56Z
dc.date.available
2023-04-04T12:18:14Z
dc.date.issued
2021-09-01
dc.identifier.issn
1530-437X
dc.identifier.issn
1558-1748
dc.identifier.other
10.1109/JSEN.2021.3090790
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/505826
dc.description.abstract
Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) was launched on May 22, 2018. It carries the Laser Ranging Interferometer (LRI) as a technology demonstrator that measures the inter-satellite range with nanometer precision using a laser-link between satellites. To maintain the laser-link between satellites, the LRI uses the beam steering method: a Fast Steering Mirror (FSM) is actuated to correct for misalignment between the incoming and outgoing laser beams. From the FSM commands, we can compute the inter-satellite pitch and yaw angles. These angles provide information about the spacecraft's relative orientation with respect to line-of-sight (LOS). We analyze LRI derived inter-satellite pointing angles for 2019 and 2020. Further, we present its comparison with the pointing angles derived from GRACE-FO SCA1B data, which represents the spacecraft attitude computed from star cameras and Inertial Measurement Unit (IMU) data using a Kalman filter. We discuss the correlations seen between the laser based attitude data and the spacecraft temperature variations. This analysis serves as the basis to explore the potential of this new attitude product obtained from the Differential Wavefront Sensing (DWS) control of a FSM.
en_US
dc.language.iso
en
en_US
dc.publisher
IEEE
en_US
dc.subject
GRACE Follow-On (GRACE-FO)
en_US
dc.subject
Laser Ranging Interferometer (LRI)
en_US
dc.subject
fast steering mirror (FSM)
en_US
dc.subject
attitude analysis
en_US
dc.subject
star cameras
en_US
dc.subject
Inertial measurement unit (IMU)
en_US
dc.subject
inter-satellite pointing
en_US
dc.title
Analysis of GRACE Follow-On Laser Ranging Interferometer Derived Inter-Satellite Pointing Angles
en_US
dc.type
Journal Article
dc.date.published
2021-06-21
ethz.journal.title
IEEE Sensors Journal
ethz.journal.volume
21
en_US
ethz.journal.issue
17
en_US
ethz.journal.abbreviated
IEEE Sens. J.
ethz.pages.start
19209
en_US
ethz.pages.end
19221
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-09-17T04:35:43Z
ethz.source
SCOPUS
ethz.eth
no
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-10-01T13:50:03Z
ethz.rosetta.lastUpdated
2024-02-02T21:30:42Z
ethz.rosetta.versionExported
true
ethz.COinS
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