A method is described for obtaining optimal attitude estimation algorithms for spacecraft lacking attitude rate measurement devices (rate gyros), and then demonstrated using actual flight data from the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) spacecraft. SAMPEX does not have on-board rate sensing, and relies on sun sensors and a three-axis magnetometer for attitude determination. Problems arise since typical attitude estimation is accomplished by filtering measurements of both attitude and attitude rates. Rates are nearly always sampled much more densely than are attitudes. Thus, the absence/loss of rate data normally reduces both the total amount of data available and the sampling density (in time) by a substantial fraction. As a result, the sensitivity of the estimates to model uncertainty and to measurement noise increases. In order to maintain accuracy in the attitude estimates, there is increased need for accurate models of the rotational dynamics. The proposed approach is based on the minimum model error (MME) optimal estimation strategy, which has been successfully applied to estimation of poorly modeled dynamic systems which are relatively sparsely and/or noisily measured. The MME estimates may be used to construct accurate models of the system dynamics (i.e. perform system model identification). Thus, an MME-based approach directly addresses the problems created by absence of attitude rate measurements.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    MME-based attitude dynamics identification and estimation for SAMPEX


    Contributors:


    Publication date :

    1994-05-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    MME-Based Attitude Dynamics Identification and Estimation for SAMPEX

    De Pena, J. / Crassidis, J. / McPartland, M. et al. | British Library Conference Proceedings | 1994


    Robust Attitude and Attitude Rate Estimation for Sampex

    Crassidis, J. L. / De Pea, J. / Meyer, T. J. et al. | British Library Conference Proceedings | 1994


    Use of Nonlinear Identification in Robust Attitude and Attitude Rate Estimation for SAMPEX

    Mook, D. / De Pena, J. / Trost, K. et al. | British Library Conference Proceedings | 1995


    Use of nonlinear identification in robust attitude and attitude rate estimation for SAMPEX

    Mook, D. Joseph / Depena, Juan / Trost, Kelly et al. | NTRS | 1995


    Robust Attitude and Attitude Rate Estimation for SAMPEX (AAS 94-153)

    Crassidis, J. L. / De Pena, J. / Meyer, T. J. et al. | British Library Conference Proceedings | 1994