Abstract
This paper describes a conceptual study of a high data rate satellite communications system composed of low earth orbital (LEO) satellites and geostationary orbit (GEO) satellites. This satellite telecommunications network, named the Satcom system, aims at high speed data transfers of 1.2 Gbps or 156 Mbps, and is assumed to be realized around 2005 to 2010. The LEO satellite constellation of this system consists of 84 satellites in seven circular orbital planes with 12 equally-spaced satellites in each plane. These LEO satellites are in sun-synchronous orbital planes at an altitude of 1400 km. Each LEO satellite communicates with the GEO satellite when it passes in the GEO satellite's pre-specified, limited coverage area. The GEO-LEO Satcom system can provide such typical services as broadband retrieval and high speed data-broadcasting services. Users can get a huge amount of data by requesting it from their terminals. Requested signals from user terminals are transferred via terrestrial lines at low data rates, and the delivered data is transferred at high data rates via satellites. This paper is based on research that was carried by Fujitsu Limited under contract to the Japanese Ministry of Posts and Telecommunications. Copyright © 1997 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
