Show simple item record

dc.contributor.authorCierny, Ondrej
dc.contributor.authorCahoy, Kerri
dc.date.accessioned2020-03-18T19:40:17Z
dc.date.available2020-03-18T19:40:17Z
dc.date.issued2018-11
dc.identifier.issn0091-3286
dc.identifier.urihttps://hdl.handle.net/1721.1/124154
dc.description.abstractDistribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. We describe techniques developed to optimize beam pointing control for a CubeSat laser downlink demonstration mission being developed at the MIT Space Telecommunications, Astronomy, and Radiation Laboratory. To fine-point its downlink beam, the mission utilizes an uplink beacon signal at 976 nm captured by an on-board ±5-deg field-of-view detector and tracked by a 3.6-mm commercial, off-the-shelf MEMS fast steering mirror. As these miniature actuators lack feedback sensors, the system design is augmented with an optical calibration signal to provide the mirror's pointing feedback. We describe the system and introduce calibration algorithms utilizing the feedback signal to achieve higher fidelity beam pointing control. A demonstration in the laboratory is conducted to obtain a quantitative performance analysis using quasi-flight hardware with simulated spacecraft body pointing disturbances. Experimental results show that beacon tracking errors of only 16 μrad root-mean-square are feasible for both axes, significantly exceeding the mission pointing requirement of 0.65 mrad and indicating the feasibility of narrower beams and higher data throughputs for next-generation downlink demonstration missions.en_US
dc.language.isoen
dc.publisherSociety of Photo-Optical Instrumentation Engineers (SPIE)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1117/1.oe.58.4.041605en_US
dc.rightsCreative Commons Attribution 3.0 unported licenseen_US
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/en_US
dc.sourceSPIEen_US
dc.titleOn-orbit beam pointing calibration for nanosatellite laser communicationsen_US
dc.typeArticleen_US
dc.identifier.citationČierny, Ondrej and Kerri L. Cahoy. "On-orbit beam pointing calibration for nanosatellite laser communications." Optical Engineering 58, 4 (November 2018): 041605 © 2018 The Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Aeronautics and Astronauticsen_US
dc.relation.journalOptical Engineeringen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-03-09T17:40:03Z
dspace.date.submission2020-03-09T17:40:06Z
mit.journal.volume58en_US
mit.journal.issue4en_US
mit.licensePUBLISHER_POLICY
mit.licensePUBLISHER_CC


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record