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Mobile satellite system fade statistics for shadowing and multipath from roadside trees at UHF and L-bandField tests related to planned mobile satellite systems were performed, and results that add to the existing database of propagation measurements at L-band (1.5 GHz) are described. They are considered particularly useful in that propagation effects were studied systematically, with repeated and controlled runs pertaining to different path elevation angles, road types, and path geometries defining shadowing and line-of-sight modes. In addition, simultaneous L-band and UHF measurements were performed for the purpose of establishing scaling factors applicable to previous UHF (870 MHz) results. The control of the experimental parameters was made possible by using a helicopter as the source platform and a mobile van to house the receiver.
Document ID
19890049843
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Goldhirsh, Julius
(Johns Hopkins University Laurel, MD, United States)
Vogel, Wolfhard J.
(Texas, University Austin, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: IEEE Transactions on Antennas and Propagation
Volume: 37
ISSN: 0018-926X
Subject Category
Communications And Radar
Accession Number
89A37214
Funding Number(s)
CONTRACT_GRANT: N00039-87-C-5301
CONTRACT_GRANT: JPL-956520
Distribution Limits
Public
Copyright
Other

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