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dc.creatorMcBryde, Christopher Ryan
dc.date.accessioned2012-06-12T17:36:34Z
dc.date.available2012-06-12T17:36:34Z
dc.date.created2012-05
dc.date.issued2012-06-12
dc.date.submittedMay 2012
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2012-05-4608
dc.descriptiontext
dc.description.abstractThis research outlines a low-cost, low-power, arc-minute accurate star tracker that is designed for use on a CubeSat. The device is being developed at the University of Texas at Austin for use on two different 3-unit CubeSat missions. The hardware consists of commercial off-the-shelf parts designed for use in industrial machine vision systems and employs a 1024x768 grey-scale charge coupled device (CCD) sensor. The software includes the three standard steps in star tracking: centroiding, star identification, and attitude determination. Centroiding algorithms were developed in-house. The star identification code was adapted from the voting method developed by Kolomenkin, et al. Attitude determination was performed using Markley's singular value decomposition method. The star tracker was then tested with internal simulated star-fields. The resulting accuracy was less than an arcminute. It was concluded that this system is a viable option for CubeSats looking to improve their attitude determination. On-orbit demonstration of the system is planned when the star tracker flies on the planned CubeSat missions in 2013 or later. Further testing with external simulated star fields and night sky tests are also planned.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.subjectStar tracker
dc.subjectStar camera
dc.subjectCubeSat
dc.subjectAttitude determination
dc.subjectSatellite
dc.subjectSmall satellite
dc.titleA star tracker design for CubeSats
dc.date.updated2012-06-12T17:36:43Z
dc.identifier.slug2152/ETD-UT-2012-05-4608
dc.description.departmentAerospace Engineering
dc.type.genrethesis*
thesis.degree.departmentAerospace Engineering
thesis.degree.disciplineAerospace Engineering
thesis.degree.grantorUniversity of Texas at Austin
thesis.degree.levelMasters
thesis.degree.nameMaster of Science in Engineering


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