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Proceedings Paper

Preliminary tests of commercial imagers for nano-satellite attitude determination
Author(s): Vladimir Tichý; Rees Fullmer; David Fowler; Martin Hromčík
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Paper Abstract

Star cameras represent a well-known class of attitude determination sensors. At this time, they achieve excellent accuracy within arc-seconds. However their size, mass, power, and cost make current commercial versions unacceptable for use on nano-satellites. Here, the concept of developing a small star camera with very modest accuracy requirements for future nano-satellite missions is studied. A small commercial cmos sensor with minimal commercial optics is presented. The cmos imager has an active array area of 5.7 × 4.3mm, with a focal length of 6mm and an aperture ratio of 1.4. This camera's field-of-view is approximately 50 × 40 degrees and can capture stars of magnitudes smaller than 3 with acquisition times of 100ms. The accuracy of attitude determination methods using data collected by this camera was tested by taking photos of the night sky under terrestrial conditions. The camera attitude was determined using offline image processing and star field attitude determination algorithms. Preliminary attitude accuracy results were determined and they are presented.

Paper Details

Date Published: 6 May 2011
PDF: 9 pages
Proc. SPIE 8073, Optical Sensors 2011; and Photonic Crystal Fibers V, 807306 (6 May 2011); doi: 10.1117/12.886743
Show Author Affiliations
Vladimir Tichý, Czech Technical Univ. in Prague (Czech Republic)
Rees Fullmer, Utah State Univ. (United States)
David Fowler, Utah State Univ. (United States)
Martin Hromčík, Czech Technical Univ. in Prague (Czech Republic)

Published in SPIE Proceedings Vol. 8073:
Optical Sensors 2011; and Photonic Crystal Fibers V
Kyriacos Kalli; Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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