The needs of on-board automation are identified and a generic approach for the design and exploitation of more autonomous spacecraft is proposed. Autonomy requirements were established through analysis of mission scenarios for Earth observation from a Sun synchronous orbit; a large automatic platform in low Earth orbit; a telecommunication mission in geostationary orbit; and a deep space scientific mission. A hierarchical and decentralized system structure to limit failure propagation, simplify interfaces and to get a predictable system; organization of on-board management in terms of routine, crisis and end-product management; and autonomous orbit determination and control are suggested. A system architecture that defines the functional tasks of the ground control center, the on-board management system and the on-board subsystems and payloads is outlined. The operational relationships between these three parts are integrated in a general model of operating modes that covers routine and crisis phases.


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    Title :

    Standard Generic Approach for Spacecraft Autonomy and Automation, Phase 2 (SGASA-2). Volume 2. Technical Report


    Contributors:
    J. Boissieres (author) / R. Havas (author) / A. Nilson (author) / J. Sotta (author) / D. Villain (author)

    Publication date :

    1985


    Size :

    373 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English