Specific propagation of radiowaves from the Intercosmos-19 satellite in the region of the nighttime equatorial anomaly crest |
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| Authors: | G A Zhbankov A T Karpachev V A Telegin K G Tsybulya |
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| Institution: | 1.Research Institute of Physics,Southern Federal University,Rostov-on-Don,Russia;2.Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation,Russian Academy of Sciences,Troitsk, Moscow oblast,Russia |
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| Abstract: | It has been indicated how a complex ionogram of topside sounding near the outer slope of the winter southern crest of the
equatorial anomaly, where a large NmF2, gradient and a deep hmF2, minimum are observed, is formed. The model latitudinal cross-sectio n of the ionosphere, used to perform trajectory calculations,
has been constructed based on the corrected Intercosmos-19 data. The ray trajectories have been modeled using the method of
characteristics. It has been indicated that a complex Intercosmos-19 ionogram is formed by an oblique reflection from the
equatorial anomaly crest slope (the main trace) and by a strongly oblique reflection from the crest bottom as a result of
the wave capture by a large-scale inhomogeneity (the additional trace). |
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