Geostationary satellites carry a majority of the international telecommunications traffic not carried by transoceanic cable. However, because the radio path links to and from geostationary satellites total at least 70,000 km and because of inherent on-board spacecraft power limitations, earth stations used in conjunction with geostationary satellites are usually large and expensive. This limits their installation to areas with a well-developed industrial and economic infrastructure. This reality helps perpetuate a chicken egg dilemma for the developing countries and isolated regions. Economic integration with the developed world requires being 'networked'. But for many developing entities, even the initial price of entry exceeds their modest resources. Exclusion from the global information highways virtually assures retardation of economic growth for developing nations, remote and isolated areas. Very Small Aperture Terminal (VSAT) earth stations are often thought of as a solution for networking developing regions. But economic considerations often forecloses this option. If VSAT size and cost is to be minimized, powerful spot beams from the satellite need to be focused on relatively small regions. This is not often feasible because of the high cost of the satellite itself. To dedicate a high power spot beam to a small region is usually not economically feasible.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Geolocation applications of the Gonets LEO messaging satellites


    Beteiligte:


    Erscheinungsdatum :

    01.01.1993


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Geolocation Algorithm for the SAMSON Satellites

    Leiter, N. / Gurfil, P. / Tekhniyon, Makhon tekhnologi le-Yisra'el | British Library Conference Proceedings | 2013


    Multiple Satellites Geolocation Based on TDOA Measurement

    Guo, Fucheng / Fan, Yun / Zhou, Yiyu et al. | Wiley | 2014



    The SAMSON Project - Cluster Flight and Geolocation with Three Autonomous Nano-satellites

    Gurfil, P. / Herscovitz, J. / Pariente, M. et al. | British Library Conference Proceedings | 2012


    Experimental Investigation of Radio Frequency (RF) Signal Geolocation Concepts Using Geostationary Satellites

    Bentley, R. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1996