Physics
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jastp..72..718n&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 72, Issue 9-10, p. 718-725.
Physics
1
Ionospheric Irregularities, Gps Scintillation, Auroral Electron Precipitation, Solar Minimum
Scientific paper
Radio wave scintillation due to the presence of ionospheric irregularities can cause fading and phase variation of L-band navigation signals such as those used by the Global Positioning System (GPS). The high-latitude regions experience increased scintillation events under geomagnetically disturbed conditions, particularly during solar maximum. This paper presents phase scintillation measurements observed at the South African Antarctic polar research station during solar minimum conditions. In addition, a multi-instrument approach is shown in which the scintillation events are associated with auroral electron precipitation. Furthermore, it is shown that external energy injection into the ionosphere is an important factor in the development of irregularities producing scintillation.
Cilliers Pierre J.
McKinnell Lee-Anne
Ngwira Chigomezyo M.
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