CAOSP abstracts, Volume: 52, No.: 3, year: 2022

Author(s): Petković, D.; Odalović, O.; Nina, A.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 52, no. 3, p. 116-125.
Date: 12/2022
Title: Influence of the solar hydrogen Lyα line on the GNSS signal delay in the ionospheric D-region
Keyword(s): solar hydrogen Lyα radiation, total electron content, ionosphere, GNSS signal delay
Pages: 116 -- 125
DOI: https://doi.org/10.31577/caosp.2022.52.3.116
NASA ADS Abstract Service: 2022CoSka..52c.116P
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: Recent research indicates that the influence of the ionospheric D-region on the propagation of satellite signals cannot be ignored during the intense X-radiation emitted during solar X-ray flares. In this paper, we investigate the influence of changes in the solar hydrogen Lyα radiation, which is manifested in variations of the D-region electron density and, consequently, the total electron content in this region, on the propagation of the Global Navigation Satellite System (GNSS) signals. We consider changes during a solar cycle and year, represented by the smoothed daily sunspot number and the day of year. The obtained results indicate that the influence of the D-region on these signals is not negligible for positioning with a single signal recorded by a single receiver during the period around the maximum of a solar cycle.