Abstract
Processing of star catalog and star image is the groundwork for star identification. The Star sensor process establishes the three-axis attitude of spacecraft by observing and identifying stars. Thus, star information is indispensable. The star information used by the star sensor process mainly includes the positions (right ascension and declination coordinates) and brightness of stars. Star sensor’s onboard memory can store the basic information of stars within a certain range of brightness. And this simplified catalog is generally called Guide Star Catalog (GSC). To accelerate the retrieval of guide stars, partition of the star catalog usually has to be done, which plays an important role in enhancing star identification and star tracking. At the early design stage of the star image processing and star identification algorithms, simulation approaches have to be taken to verify their correctness and to conduct performance evaluation.
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