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The design and planning of feeder links to broadcasting satellitesDesign and planning guidelines being followed to define feeder link parameters for the U.S. ITU Region 2 DBS system are outlined. The carrier/noise (C/N) ratio determines the signal quality acceptable to the consumer and sets the standards which the link must meet. A 10 dB margin is required to meet a 99 percent availability criterion for the times of heaviest rainfall attenuation. The receiver gain is limited by the bandwidth, system noise temperature, and the antenna size. Three mechanisms have been identified for ensuring receiver discrimination between desired and interfering signals. Test points must be selected to examine the effectiveness of the chosen feeder link configuration in maintaining signal reception and channel separation, of the antennas installed, and of the orbital positions of the satellites.
Document ID
19850047469
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kiebler, J. W.
(NASA Office of Space Science and Applications Washington, DC, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: IEEE Journal on Selected Areas in Communications
Volume: SAC-3
ISSN: 0733-8716
Subject Category
Communications And Radar
Accession Number
85A29620
Distribution Limits
Public
Copyright
Other

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