Pattern recognition of star constellations for spacecraftapplications |
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Authors: | Liebe C.C. |
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Affiliation: | Dept. of Electrophys., Tech. Univ. of Denmark, Lyngby; |
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Abstract: | 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 |
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