The use of the international GPS network as the global detector (GLOBDET) simultaneously observing sudden ionospheric disturbances

Details The use of the international GPS network as the global detector (GLOBDET) simultaneously observing sudden ionospheric disturbances The use of the international GPS network as the global detector (GLOBDET) simultaneously observing sudden ionospheric disturbances

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ep%26s...52.1077a&link_type=abstract

Earth, Planets and Space, Volume 52, p. 1077-1082.

Physics

6

Scientific paper

We developed a new technology for global detection of ionospheric disturbances, on the basis of phase measurements of the total electron content (TEC) along the line-of-sight (LOS) between the receiver on the ground and transmitters on the GPS satellites using an international GPS networks. Temporal dependencies of TEC with the time resolution of 30 s are obtained for a set of spaced receivers of the GPS network simultaneously for the entire set of visible satellites. These series are subjected to filtering in the selected range of oscillation periods using known algorithms for spatio-temporal analysis of signals. An analysis is made of the possibilities of using the GLOBDET when detecting the ionospheric response of solar flares. In this case it is best to make the coherent summation of the filtered series of TEC. Because of a statistical independence of the background fluctuations, the signal/noise ratio, when the flare effect is detected, is increased due to a coherent processing by at least the √(N) times, where N is the number of LOS.

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