ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2012, Vol. 9, No. 3, pp. 164-171

Equatorial ionosphere radiosounding from the height of the vicinity of its maximum

N.G. Kotonaeva 
Fedorov Institute of Applied Geophysics, 129128, Moscow, Rostokinskiy, 9
This article analyzes the results of an experiment on radio sounding of the equatorial ionosphere, with the help of ionosonde, who was on board the space station (SS) Mir. The paper presents the distribution of the plasma frequency of the ionosphere along the orbit of the complex at different times of day. An arrangement of the maxima of the equatorial anomaly crests according to data of the OS "Mir" are shown and this location is compared with the forecast model IRI-2001. Zones of the greatest change of electron density and a simultaneous increase in the maximum height were accompanied by the appearance of additional traces on ionograms with large group delays. The analysis of the time and place of registration of such ionograms are made. Results of the study agree qualitatively with the results of studies IGS Center World Date, by definition, the total electron content.
Keywords: space station Mir, the ionosphere, satellite radio sounding, ionograms, the critical frequency, plasma frequency, retarded lower trace, the equatorial anomaly
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