A single, augmented extended Kalman filter (EKF) which simultaneously and autonomously estimates spacecraft attitude and orbit was developed and tested with simulated and real magnetometer and rate data. Since the earth's magnetic field is a function of time and position, and since time is accurately known, the differences between the computed and measured magnetic field components, as measured by the magnetometers throughout the entire spacecraft's orbit, are a function of orbit and attitude errors. These differences can be used to estimate the orbit and attitude. The test results of the EKF with magnetometer and gyro data from three NASA satellites are presented and evaluated.


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    Title :

    Comprehensive evaluation of attitude and orbit estimation using real earth magnetic field data


    Contributors:

    Publication date :

    1997-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Comprehensive evaluation of attitude & orbit estimation using real Earth magnetic field data

    Deutschmann, J. / Bar-Itzhack, I. / European Space Agency | British Library Conference Proceedings | 1997


    Comprehensive evaluation of attitude & orbit estimation using real Earth magnetic field data

    Deutschmann, J. / Bar-Itzhack, I. | British Library Online Contents | 1997




    Evaluation of Attitude and Orbit Estimation Using Actual Earth Magnetic Field Data

    Julie K. Deutschmann / Itzhack Y. Bar-Itzhack | AIAA | 2001