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Studying the Parameters of Frequency Dispersion for Radio Links of Different Length Using Software‐Defined Radio Based Sounding System
Author(s) -
Ivanov V. A.,
Ivanov D. V.,
Ryabova N. V.,
Ryabova M. I.,
Chernov A. A.,
Ovchinnikov V. V.
Publication year - 2019
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2018rs006636
Subject(s) - ionosonde , high frequency , radio wave , software defined radio , radio propagation , radio frequency , bandwidth (computing) , dispersion (optics) , skywave , wideband , radio spectrum , depth sounding , physics , acoustics , telecommunications , computer science , ionosphere , optics , geology , radar , geophysics , oceanography , electron density , quantum mechanics , electron
Methods and relevant software were developed to study frequency dispersion parameters of wideband high‐frequency (HF) radio channels over propagation paths of different lengths: near vertical incidence skywave paths (up to 500 km) and long‐distance radio paths (from 1,000 up to 3,500 km). We developed a universal ionosonde (in terms of methods and signals) to do experimental research into HF radio wave propagation and dispersion using software‐defined radio technology and platform Universal Software Radio Peripheral N210. The multipurposeness of the ionosonde is manifested in the sounding methods used (oblique incidence and vertical incidence) as well as in the spread spectrum signals used (binary phase shift keying, frequency modulated continuous wave, and frequency modulated interrupted continuous wave). The characteristics of the megahertz‐bandwidth HF channels were studied. The dependences of the variation of the third‐order dispersion parameter on the time of day, the radio path length, and the channel carrier frequency were experimentally found.