A methodology for initial orbit determination of an object about an astronomical body searches a grid of possible boundary values on the range-to-object over the observation interval to find the grid point and corresponding initial orbit that best fits all of the more than three (N) angles-only observations according to an error metric. The search is conducted by solving a boundary-value problem for different grid points. The state vector is propagated to determine estimated observation directions for the remaining N−2 observations. The grid point (and initial orbit) that best fit all of the observations is selected. For efficiency, the search may start with a broad but coarse initial grid and increase the resolution of the grid as the search converges to a solution.


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    Titel :

    ANGLES-ONLY INITIAL ORBIT DETERMINATION (IOD)


    Weitere Titelangaben:

    ANFANGSUMLAUFBAHNBESTIMMUNG AUSSCHLIESSLICH MIT WINKELBEOBACHTUNG
    DETERMINATION D'ORBITE INITIALE EN UTILISANT EXCLUSIVEMENT DES OBSERAVTIONS D'ANGLE


    Beteiligte:
    COLEMAN GARY D (Autor:in) / SILNY JOHN F (Autor:in)

    Erscheinungsdatum :

    2017-09-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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