iipp publishingJournal of Applied Engineering Science

Article

Dispersive distortions of system characteristics of broadband transionospheric radio channels
ISSN: 1451-4117     
E-ISSN: 1821-3197    
DOI: 10.5937/jaes15-11784
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions. 
Volume 15 article 487 pages: 550 - 555

Dmitriy Ivanov
Volga State University of Technology, Russia

Vladimir Ivanov
Volga State University of Technology, Russia

Natalya Ryabova
Volga State University of Technology, Russia

Mariia Ryabova
Bauman Moscow State Technical University, Moscow, Russia

Alexey Kislitsin
Volga State University of Technology, Russia

Andrei Chernov
Volga State University of Technology, Russia

Nikita Konkin
Volga State University of Technology, Russia

Modern radio systems that use a transionospheric channel, are required signal bandwidth expansion. However, with
a significant bandwidth expansion, there is a problem of dispersive distortions signals due to different phase speed
of its spectral components. Evaluation of distortions is required comprehensive research of frequency dispersion for
such radio channels. The aim of the research is to solve this problem. Formulated the general provisions of theory
of frequency dispersion of phase shift in a medium. Formulas are obtained for components of dispersion through the
approximation of a refractive index of a wave at a satellite-to-Earth link. Dependencies were obtained to evaluate
dispersion parameters of various orders by the integral characteristics of electron density profile. Expressions were
obtained for band coherence of wideband transionospheric channels and method of its evaluation, also we present
the algorithm for constructing diagnostic maps of bands coherence for different regions by data of receiving stations
of satellite navigation systems.

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