The validity of a new algorithm for the estimation of parameters related to torques on spacecraft torques is investigated. The algorithm is based on data reduction by numerical differentiation using smoothing splines. Measured data of the ESRO 1A Aurorae spacecraft are used. It was concluded that the new data reduction algorithm is stable and efficient. So-called end effects of the smoothing splines cause minor problems however. It was further concluded that the mathematical model for the spacecraft torques may be improved; better models are proposed. The algorithm appears to be a powerful tool for accurate estimation of in-orbit spacecraft torque parameters. (Author)


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    Title :

    Parameter Estimation in Mathematical Models of the Esro 1A Attitude Dynamics Using Numerical Differentiation of Measured Data


    Contributors:

    Publication date :

    1972


    Size :

    81 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English