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Communication architecture for large geostationary platformsLarge platforms have been proposed for supporting multipurpose communication payloads to exploit economy of scale, reduce congestion in the geostationary orbit, provide interconnectivity between diverse earth stations, and obtain significant frequency reuse with large multibeam antennas. This paper addresses a specific system design, starting with traffic projections in the next two decades and discussing tradeoffs and design approaches for major components including: antennas, transponders, and switches. Other issues explored are selection of frequency bands, modulation, multiple access, switching methods, and techniques for servicing areas with nonuniform traffic demands. Three-major services are considered: a high-volume trunking system, a direct-to-user system, and a broadcast system for video distribution and similar functions. Estimates of payload weight and d.c. power requirements are presented. Other subjects treated are: considerations of equipment layout for servicing by an orbit transfer vehicle, mechanical stability requirements for the large antennas, and reliability aspects of the large number of transponders employed.
Document ID
19790069391
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bond, F. E.
(Aerospace Corp. El Segundo, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1979
Subject Category
Communications And Radar
Report/Patent Number
IAF PAPER 79-300
Accession Number
79A53404
Funding Number(s)
CONTRACT_GRANT: NAS8-32281
Distribution Limits
Public
Copyright
Other

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