Aimed at solving the “lost-in-space” (LIS) problem, a robust star pattern identification algorithm is presented. The neighbor star pattern is introduced to increase separating ability and stabilization of star patterns and reduce the effects of magnitude noise. Redundant coding for radial and neighbor star patterns is proposed to more effectively remove the effects of position noise. Binary bit strings are used for storing the redundant code to reduce the size of the on-board database. A similar score measurement is proposed on the basis of shift and logical AND operations to quickly implement the star's initial match. The final match results are obtained using a strategy of searching for the longest matching chain. The algorithm is evaluated with synthesized and real star images. The identification rates of this algorithm are 97.98% with standard deviations of position noises of 1 pixel and 94.96% with standard deviations of magnitude noises of 0.646 Mv. Moreover, the identification rate is 77.12% when there are only four stars in the field of view (FOV). The algorithm obtains an average identification rate of 96.96% from real star images.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Redundant-coded radial and neighbor star pattern identification algorithm


    Beteiligte:
    Jie Jiang (Autor:in) / Feilong Ji (Autor:in) / Jinyun Yan (Autor:in) / Li Sun (Autor:in) / Xinguo Wei (Autor:in)


    Erscheinungsdatum :

    01.10.2015


    Format / Umfang :

    2145423 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Redundant-Coded Masked Grid Pattern for Full-Sky Star Identification

    Liao, Jiawen / Wei, Xin / Niu, Axi et al. | IEEE | 2024


    Full-sky autonomous star identification based on radial and cyclic features of star pattern

    Zhang, G. / Wei, X. / Jiang, J. | British Library Online Contents | 2008



    A Simplified Pattern Match Algorithm For Star Identification

    Lee, M. / Goddard Space Flight Center | British Library Conference Proceedings | 1996