The instrument pointing subsystem (IPS) is a three-axis stabilized platform developed to point various astronomical observation instruments aboard NASA's shuttle. In order to compensate for system drifts and attitude errors, the IPS utilizes a linearized Kalman filter (LKF) with precomputed gains. Since the a priori gains are generated for an expected system configuration, any system variations result in a suboptimal estimation process. The performance of two real-time estimation filters is compared with that of the current LKF implementation. It is shown that a real-time estimation filter that reduces sensitivity to system variations and preflight computations is feasible.


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    Title :

    An optimal recursive filter for the attitude determination of the spacelab instrument pointing subsystem


    Additional title:

    Ein optimales Rekursivfilter für die Lagebestimmung des Spacelab-Meßanzeige-Untersystems


    Contributors:
    West, M.E. (author) / McCullough, C. (author)


    Publication date :

    1989


    Size :

    3 Seiten, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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