Refinement of model ionospheric critical frequency values for current conditions from data on the difference between delays of ionospheric signals from two navigation satellites

S. N. Kolesnik; V. I. Sazhin; A. S. Timofeev; V. E. Unuchkov

doi:10.1117/12.2575493

12 November 2020 Refinement of model ionospheric critical frequency values for current conditions from data on the difference between delays of ionospheric signals from two navigation satellites

S. N. Kolesnik, V. I. Sazhin, A. S. Timofeev, V. E. Unuchkov

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Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115608D (2020) https://doi.org/10.1117/12.2575493
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

We have refined values of critical frequencies, obtained from the IRI model, for a given hour at certain space points adjacent to the site for which vertical ionospheric sounding data are available. The refinement is based on data on the difference between ionospheric delays of signals received from two navigation satellites at one point in time. As reference values we have used the differences calculated from the ionospheric total electron content, obtained from IONEX maps. As derived from data for 20 pairs of satellites, the mean value of the relative difference between the refined critical frequency and the estimated one is 9.8 %.

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S. N. Kolesnik, V. I. Sazhin, A. S. Timofeev, and V. E. Unuchkov "Refinement of model ionospheric critical frequency values for current conditions from data on the difference between delays of ionospheric signals from two navigation satellites", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115608D (12 November 2020); https://doi.org/10.1117/12.2575493

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