The European Retrieval Carrier (EURECA) was launched on its first flight on the 31st July 1992 by the Space Shuttle Atlantis. EURECA is characterized by several new on-board features, most notable Packet Telemetry and a partial implementation of Packet Telecommanding using an early version of the Command Operation Procedure (COP-1) protocol. EURECA has also very low contact time with its Ground Station, with a consequent high number of out-of-visibility onboard operations. This paper concentrates on the implementation and operational experience with the COP-1 Protocol and the effect the short ground contact time has on the design of the Commanding System. Another interesting feature is that the COP-1 is implemented at the control center rather than at the ground station. The COP-1 protocol also successfully supported the mission during the launch where commands were sent via NASCOM and the Shuttle.


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    Title :

    The EURECA telecommanding chain: Experience with packet telecommand and telemetry systems


    Contributors:
    Mueller, C. (author) / Bater, R. (author) / Sorensen, E. M. (author)


    Publication date :

    1993-03-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






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