Traditionally satellite attitude and trajectory have been estimated with completely separate systems, using different measurement data. The estimation of both trajectory and attitude for low earth orbit satellites has been successfully demonstrated in ground software using magnetometer and gyroscope data. Since the earth's magnetic field is a function of time and position, and since time is known quite precisely, the differences between the computed and measured magnetic field components, as measured by the magnetometers throughout the entire spacecraft orbit, are a function of both the spacecraft trajectory and attitude errors. Therefore, these errors can be used to estimate both trajectory and attitude. This work further tests the single augmented Extended Kalman Filter (EKF) which simultaneously and autonomously estimates spacecraft trajectory and attitude with data from the Rossi X-Ray Timing Explorer (RXTE) magnetometer and gyro-measured body rates. In addition, gyro biases are added to the state and the filter's ability to estimate them is presented.


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    Title :

    Estimating Attitude, Trajectory, and Gyro Biases in an Extended Kalman Filter using Earth Magnetic Field Data from the Rossi X-Ray Timing Explorer


    Contributors:


    Publication date :

    1997-05-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Estimating Attitude, Trajectory, and Gyro Biases in an Extended Kalman Filter Using Earth Magnetic Field Data From the Rossi X-Ray Timing Explorer

    Deutschmann, J. / Bar-Itzhack, I. / National Aeronautics and Space Administration | British Library Conference Proceedings | 1997


    Estimating Attitude, Trajectory, and Gyro Biases in an Extended Kalman Filter Using Earth Magnetic Field Data

    Deutschmann, J. / Bar-Itzhack, I. Y. / Kenes Tel Aviv | British Library Conference Proceedings | 1997




    The Use of Magnetic Field Data to Estimate Attitude and Trajectory for the Rossi X-Ray Timing Explorer (RXTE)

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