Nonlinearities in spacecraft attitude determination problem has been studied intensively during the past decades. Traditionally, multiplicative extended Kalman filter MEKF algorithm has been a good solution for most nominal space missions. But in recent years, advances in space missions deserve a revisit of the issue. Though there exist a variety of advanced nonlinear filtering algorithms, most of them are prohibited for actual onboard implementation because of their overload computational complexity. In this paper, we address this difficulty by developing a new algorithm framework based on the marginal filtering principle, which requires only 4 sigma points to give a complete 6-state attitude and angular rate estimation. Moreover, a new strategy for sigma point construction is also developed to further increase the efficiency and numerical accuracy. Incorporating the presented framework and novel sigma points, we proposed a new, nonlinear attitude and rate estimator, namely, the Marginal Geometric Sigma Point Filter. The new algorithm is of the same precision as traditional unscented Kalman filters,while keeping a significantly lower computational complexity, even when compared to the reduced sigma point algorithms. In fact, it has truly rivaled the efficiency of MEKF, even when simple closed-form solutions are involved in the latter.


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    Title :

    Highly efficient Sigma Point Filter for spacecraft attitude and rate estimation


    Additional title:

    Hocheffizientes Sigmapunkt-Filter zur Bestimmung der Lage und Winkelgeschwindigkeit von Raumfahrzeugen


    Contributors:
    Fan, Chunshi (author) / You, Zheng (author)


    Publication date :

    2009


    Size :

    23 Seiten, 4 Bilder, 5 Tabellen, 19 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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