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Long-term statistics related to evaporation duct propagation of 2 GHz radio waves in the English Channel

By S.D. Gunashekar, E. Michael Warrington and David R. Siddle


This paper presents long‐term statistics additional to those previously published\ud pertaining to evaporation duct propagation of UHF radio waves in the British Channel\ud Islands, with particular focus on a completely over‐sea 50 km transhorizon path. The\ud importance of the evaporation duct as an anomalous propagation mechanism in marine\ud and coastal regions is highlighted. In particular, the influence of various atmospheric parameters\ud on the performance of a popular operational evaporation duct model is examined.\ud The strengths and weaknesses of this model are evaluated under specific atmospheric conditions.\ud The relationship between the continually varying evaporation duct height and\ud transmitter‐receiver antenna geometries is analyzed, and a range of statistics related to the\ud implications of this relationship on the received signal strength is presented. The various\ud issues under investigation are of direct relevance in the planning of long‐range, over‐sea\ud radio systems operating in the UHF band, and have implications for the radio regulatory\ud work carried out by organizations such as the International Telecommunication Union.Peer ReviewedPublisher Versio

Publisher: American Geophysical Union
Year: 2010
DOI identifier: 10.1029/2009RS004339
OAI identifier: oai:lra.le.ac.uk:2381/8819

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