Loral Aerospace Corporation along with Qualcomm Inc. have developed a satellite system which offers global mobile voice and data services to and from handheld and mobile user terminals with omni-directional antennas. By combining the use of low-earth orbit (LEO) satellites with existing terrestrial communications systems and innovative, highly efficient spread spectrum techniques, the Globalstar system provides users with low-cost, reliable communications throughout the world. The Globalstar space segment consists of a constellation of 48 LEO satellites in circular orbits with 750 NM (1389 km) altitude. Each satellite communicates with the mobile users via the satellite-user links and with gateway stations. The gateway stations handle the interface between the Globalstar network and the OSTN/PLMN systems. Globalstar transceivers are similar to currently proposed digital cellular telephones in size and have a serial number that will allow the end user to make and receive calls from or to that device anywhere in the world. The Globalstar system is designed to operate as a complement to existing local, long-distance, public, private and specialized telecommunications networks. Service is primarily designed to serve the rural and thin route communications needs of consumers, government users, and private networks.


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    Titel :

    The Globalstar mobile satellite system for worldwide personal communications


    Beteiligte:


    Erscheinungsdatum :

    01.01.1993


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Globalstar communications payload for global mobile communications

    LOUIE, MING / MONTE, PAUL / TYNER, RANDY et al. | AIAA | 1992


    Globalstar - Mobile communications where ever you are

    WIEDEMAN, ROBERT / SALMASI, ALLEN / ROUFFET, DENNIS | AIAA | 1992



    The Globalstar Satellite Payload

    Coulomb, B. | British Library Online Contents | 1995


    The Globalstar Satellite Payload

    Coulomb, B. / European Space Agency / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1995