The report presents recommended system configurations for returning seismic data from seismological research stations in Norway (NORSAR), Iran, and Korea to the Seismic Data Analysis Center (SDAC) in Alexandria, Va. The data are to be returned through INTELSAT earth stations in Sweden, Iran, Korea, and U.S., via INTELSAT satellites located over the Atlantic and Pacific Oceans. Three system approaches were considered, viz, (1) use of terrestrial microwave systems from the seismic station to the INTELSAT earth station, and subsequent transmission to the satellite on a standard FM carrier; (2) construction of a non-standard earth station at the seismic site for direct access to the satellite using single channel per carrier (SCPC) or SPADE transmission techniques; and (3) the possible use of packet-switching technology by extending the ARPANET to those countries where the seismic sites are located. (Modified author abstract)


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    Title :

    Alternate Approaches for Returning Seismic Data from Within the Worldwide Seismological Network to SDAC


    Contributors:

    Publication date :

    1974


    Size :

    48 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English