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Pattern recognition of star constellations for spacecraft applications

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1 Author(s)
Liebe, C.C. ; Dept. of Electrophys., Tech. Univ. of Denmark, Lyngby, Denmark

A software system for a star imager for online satellite attitude determination is described. The system works with a single standard commercial CCD camera with a high aperture lens and an onboard star catalog. It is capable of both an initial coarse attitude determination without any prior knowledge of the satellite orientation and a high-accuracy attitude determination based on prediction and averaging of several identified star constellations. In the high-accuracy mode the star image aims at an accuracy better than 2 arc sec with a processing time of less than a few seconds. The star imager has been developed for the Danish Oersted satellite.<>

Published in:

Aerospace and Electronic Systems Magazine, IEEE  (Volume:7 ,  Issue: 6 )