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Anomalous transhorizon propagation and meteorological processes of a multilink path
Author(s) -
Shen X. D.,
Vilar E.
Publication year - 1995
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/95rs01827
Subject(s) - atmospheric duct , signal (programming language) , radio propagation , reflection (computer programming) , path (computing) , event (particle physics) , channel (broadcasting) , transmission (telecommunications) , radio signal , computer science , geology , remote sensing , meteorology , physics , telecommunications , radio frequency , quantum mechanics , atmosphere (unit) , programming language
An event‐based approach is developed and applied to 3 years of data of a four link transhorizon path over the English Channel (La Manche). The signal enhancements (events) observed on the chart recordings during anomalous propagation are selected and, according to their dynamical signatures, categorized into three main patterns of ducting, layer reflection, and high k factor diffraction. The statistical analysis carried out on this event basis gives the correlation between the signal levels of different links and the cross correlation between signal levels and local N index derived from surface meteorological monitoring. The results reveal the fundamental properties of the anomalous propagation regimes. Using case studies of several interesting events, the meteorological processes and resultant impact on transhorizon transmission are also explained. This extensive work contributes to a better understanding of anomalous propagation mechanisms present in transhorizon links.