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Time delay variations in HF propagation
Author(s) -
LaBahn R. W.,
Rose R. B.
Publication year - 1982
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/rs017i005p01285
Subject(s) - radio propagation , range (aeronautics) , arrival time , mode (computer interface) , skywave , radio wave , wave propagation , time of arrival , physics , beam (structure) , environmental science , telecommunications , geodesy , meteorology , geology , optics , computer science , ionosphere , geophysics , aerospace engineering , engineering , transport engineering , wireless , operating system
An experiment has been established to determine the range of environmentally induced fluctuations in the propagation of HF radio signals. Data are collected with a fully digitized system that is stablized with a cesium beam standard. Initial efforts have been directed toward monitoring at San Diego, California, the time of arrival of WWV transmissions from Fort Collins, Colorado, for the frequencies 5, 10, 15, and 20 MHz. Variations in these arrival times from 25 to 175 μs have been observed depending upon frequency, mode of propagation, time of day, and solar activity.