Physics – Geophysics
Scientific paper
2000-07-10
Physics
Geophysics
EmTeX-386, 10 pages with 3 figures, article:papeglob.tex, figures: fig1GRAD.PS.Z, fig2GRAD.PS.Z, fig3GRAD.PS.Z
Scientific paper
This author suggests the concept of a new technology for global detection (GLOBDET) of atmospheric disturbances of natural and technogenic origin, on the basis of phase measurements of the total electron content (TEC) in the ionosphere using an international GPS network. Temporal dependencies of TEC are obtained for a set of spaced receivers of the GPS network simultaneously for the entire set of "visible" (over a given time interval) GPS satellites (up to 5-10 satellites). These series are subjected to filtering in the selected range of oscillation periods using algorithms for spatio-temporal analysis of signals of non-equidistant GPS phased antenna arrays which are adequate to the detected disturbance. 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. A powerful impulsive flares of July 29, 1999 and December 28, 1999 were chosen to illustrate the practical implementation of the proposed method.
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