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ATS-F Comsat Millimeter Wave Propagation ExperimentThe ATS-F Comsat Millimeter Wave Propagation Experiment has been designed to gather statistical data on the attenuation caused by rain at millimeter wave frequencies. These data will be used to determine system design parameters for future communications satellite systems operating at frequencies above 10 GHz. The experiment has 39 ground terminals transmitting at 13.2 or 17.8 GHz to a transponder on board the ATS-F satellite. The transponder retransmits these signals at 4 GHz to a central earth terminal which records their amplitudes once each second. The data will be analyzed to provide probabilities of attenuation as functions of parameters such as rainfall, location, and time. These probabilities can then be used to determine the required power margins of millimeter wave communications systems. Techniques of overcoming severe attenuation such as site diversity and the use of a spot beam to increase the power level at selected locations will also be evaluated.
Document ID
19740031491
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Westerlund, L. H.
Levatich, J. L.
Buige, A.
(COMSAT Laboratories Clarksburg, Md., United States)
Date Acquired
August 7, 2013
Publication Date
November 1, 1973
Publication Information
Publication: COMSAT Technical Review
Volume: 3
Subject Category
Communications
Accession Number
74A14241
Funding Number(s)
CONTRACT_GRANT: NAS5-21616
Distribution Limits
Public
Copyright
Other

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