A single, augmented Extended Kalman Filter (EKF), which simultaneously and autonomously estimates spacecraft attitude and orbit has been developed and successfully tested with real magnetometer and gyro data only. Because the earth magnetic field is a function of time and position, and because 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 orbit and attitude errors. Thus, conceivably these differences could be used to estimate both orbit and attitude; an observability study validated this assumption. The results of testing the EKF with actual magnetometer and gyro data, from four satellites supported by the NASA Goddard Space Flight Center (GSFC) Guidance, Navigation, and Control Center, are presented and evaluated. They confirm the assumption that a single EKF can estimate both attitude and orbit when using gyros and magnetometers only.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

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


    Beteiligte:

    Erscheinungsdatum :

    2000-01-01


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



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

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


    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