A great deal of attention has been paid to navigation during the close approach (less than or equal to 1 km) phase of spacecraft rendezvous. However, most spacecraft also require a navigation system which provides the necessary accuracy for placing both satellites within the range of the docking sensors. The Microcosm Autonomous Navigation System (MANS) is an on-board system which uses Earth-referenced attitude sensing hardware to provide precision orbit and attitude determination. The system is capable of functioning from LEO to GEO and beyond. Performance depends on the number of available sensors as well as mission geometry; however, extensive simulations have shown that MANS will provide 100 m to 400 m (3(sigma)) position accuracy and 0.03 to 0.07 deg (3(sigma)) attitude accuracy in low Earth orbit. The system is independent of any external source, including GPS. MANS is expected to have a significant impact on ground operations costs, mission definition and design, survivability, and the potential development of very low-cost, fully autonomous spacecraft.


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    Title :

    Fully Autonomous Navigation for the NASA Cargo Transfer Vehicle


    Contributors:
    J. R. Wertz (author) / E. D. Skulsky (author)

    Publication date :

    1991


    Size :

    2 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Fully autonomous navigation for the NASA cargo transfer vehicle

    Wertz, James R. / Skulsky, E. David | NTRS | 1991


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