A simple method of determining the six elements of elliptic satellite orbits has been developed for use aboard manned and unmanned spacecraft orbiting the earth, moon, or any planet. The system requires the use of a horizon sensor or other device for determining the local vertical, a precision clock or timing device, and Apollo-type navigation equipment including an inertial measurement unit (IMU), a digital computer, and a coupling data unit. The three elements defining the in-plane motion are obtained from simultaneous measurements of central angle traversed around the planet and elapsed flight time using a linearization of Kepler's equation about a reference orbit. It is shown how Kalman filter theory may also be used to determine the in-plane orbital elements. The three elements defining the orbit orientation are obtained from position angles in celestial coordinates derived from the IMU with the spacecraft vertically oriented after alignment of the IMU to a known inertial coordinate frame.


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    Titel :

    Autonomous orbital navigation using Kepler's equation


    Beteiligte:
    Boltz, F. W. (Autor:in)

    Kongress:

    Mechanics and Control of Flight Conference ; 1974 ; Anaheim, CA


    Erscheinungsdatum :

    1974-08-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    Efficient inverse solution of Kepler's equation

    Boltz, Frederick W. | NTRS | 1986



    Solving Kepler's Equation Using Implicit Functions (AAS 13-726)

    Mortari, D. / Elipe, A. / American Astronautical Society | British Library Conference Proceedings | 2014