This paper presents an attitude error model of a star tracker, which is induced from the optical system errors, and proposes an attitude Kalman filter considering the star tracker errors. Though it can be calibrated before and after launches, it is impossible to obtain error-free star tracker parameters in practice, which generates non-white noise errors in the star tracker outputs. Moreover, star tracker error models are usually a business secret for the manufacturers, so it is hard to estimate them online on the spacecraft bus. We model the attitude bias caused by the error of the optical parameters as colored noise using the camera model parameters and their covariance. A recursive form of the colored noise is derived based on a vector autoregressive model, and a colored noise Kalman filter is proposed to estimate the attitude error along with the spacecraft attitude and gyro bias. The proposed method only needs three additional states to be estimated and does not contain sensitive information for a star tracker manufacturer, which can ease the burden of its applications. The simulations illustrate the stability and reliability of the proposed algorithm.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Modeling and Filtering Colored Noise of a Star Tracker


    Weitere Titelangaben:

    J Astronaut Sci


    Beteiligte:
    Wi, Junsung (Autor:in) / Baeck, Kiwook (Autor:in) / Yoon, Hyosang (Autor:in)


    Erscheinungsdatum :

    2023-03-29




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Recursive Filtering of Star Tracker Data

    Darling, Jacob / Houtz, Nathan / Frueh, Carolin et al. | AIAA | 2016


    RECURSIVE FILTERING OF STAR TRACKER DATA

    Darling, Jacob E. / Houtz, Nathan / Frueh, Carolin et al. | British Library Conference Proceedings | 2016


    STAR TRACKER AND METHOD FOR CONTROLLING THE STAR TRACKER

    KANG WOOYONG / BAEK KWANGYUL | Europäisches Patentamt | 2021

    Freier Zugriff

    Vidicon star tracker

    Schuck, W.H. | Engineering Index Backfile | 1966


    Autonomous star tracker performance

    Rogers, Gabe D. / Schwinger, Marsha R. / Kaidy, James T. et al. | Elsevier | 2009