Institute for Telecommunication Sciences
the research laboratory of the National Telecommunications and Information Administration

George A. Hufford; Donald R. Ebaugh Jr.

Abstract: In a cooperative program, the Federal Communications Commission and the Institute for Telecommunication Sciences have begun a study of the interference fields that may arise in a ducting environment. This report gives some preliminary thoughts on how enhanced signal levels might be modeled and describes a measurement program that operated in Southern California. Comparisons are made between some of the first-order statistics of the data and two of the possible models and show that there still remains a large gap between our modeling abilities and reality.

Keywords: radio propagation; VHF; UHF; long-term variability; radio ducts; short-term variability


To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572
lsegre@ntia.doc.gov

For technical information concerning this report, contact:

George A. Hufford
Institute for Telecommunication Sciences
(303) 497-3457
ghufford@ntia.doc.gov


Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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