The development of a control system to accommodate the scientific payload of the High Energy Astronomy Observatory (HEAO) is discussed. One of the critical elements of the system is the star tracker subsystem, which defines an accurate three-axis attitude reference. A digital computer program has been developed to evaluate the ability of a particular star tracker configuration to meet the requirements for attitude reference at various vehicle orientations. Used in conjuction with an adequate star catalog, the computer program provides information on availability of stars for each tracker and on the ability of the system to maintain three-axis attitude reference throughout a representative sequence of vehicle orientations. (Author)


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    Title :

    High Energy Astronomy Observatory Star Tracker Search Program


    Contributors:

    Publication date :

    1972


    Size :

    46 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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