Auroral and polar-cap ionospheric effects on radio propagation

Disturbances in the auroral and polar-cap ionosphere can have profound effects on radio signals traversing the high-latitude ionosphere (defined here as that latitudinal region poleward of approximately 55 degrees corrected geomagnetic latitude). Some effects of the high-latitude ionosphere on polar...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 1992-07, Vol.40 (7), p.818-828
Main Author: Hunsucker, R.D.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Geomagnetism
Geophysical measurement techniques
Ground penetrating radar
Ionosphere
Physics computing
Predictive models
Propagation through the atmosphere
Radar scattering
Radio propagation
Radiocommunications
Radiowave propagation
Supercomputers
Telecommunications
Telecommunications and information theory
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Summary:Disturbances in the auroral and polar-cap ionosphere can have profound effects on radio signals traversing the high-latitude ionosphere (defined here as that latitudinal region poleward of approximately 55 degrees corrected geomagnetic latitude). Some effects of the high-latitude ionosphere on polar radio paths were documented as early as the 1930s, but intensive investigations of this ionospheric global region started during the International Geophysical Year (IGY) 1957-1959. Starting in the mid-1960s it was realized that high-latitude ionospheric anomalies could affect radio signals from ELF through VHF on terrestrial and earth-space paths, especially during sunspot maximum, disturbed periods. A considerable effort has been made in the last two decades to model and predict the salient parameters of the auroral and polar-cap ionosphere. A somewhat lesser effort has been devoted to develop HF propagation programs which included high-latitude ionospheric effects. Salient past results are briefly reviewed, and developments in this field for the period 1970-91 are presented.< >
ISSN:0018-926X
1558-2221
DOI:10.1109/8.155747