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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2025, V. 22, No. 3, pp. 301-317

Solar flares in the 25th cycle of activity: Effect on ionospheric disturbance and GNSS signal strength

D.S. Maksimov 1 , D.A. Kogogin 1 , I.A. Nasyrov 1 , R.V. Zagretdinov 1 
1 Kazan Federal University, Kazan, Russia
Accepted: 19.03.2025
DOI: 10.21046/2070-7401-2025-22-3-301-317
The paper presents the results of a study of the effect of solar flares and geomagnetic storms that occurred in the first half of the 25th solar activity cycle on ionospheric disturbance. Special attention is paid to the study of the signal-to-noise ratio for various signal components on Global Navigation Satellite System (GNSS) receivers. Ionospheric responses were recorded in the form of an increase in the median values of the Rate of Total Electron Content Index (ROTI) for the study region during the action of X- and M-class solar flares to 0.2 TECU/min with a duration of up to 30 min. The ionosphere’s response to a powerful geomagnetic storm on May 10–11, 2024, was also recorded, with an increase in the median ROTI to 0.24 TECU/min. The ionospheric disturbances lasted throughout the action of the magnetic storm. The study of changes in the median values of the signal-to-noise ratio across the study region revealed decreases during individual solar flares with both sharp and smooth gradients. The flares that caused a decrease in the signal-to-noise ratio were accompanied by radio emission at the operating frequencies of GNSS. The reduction values reached 3–5 dBHz for most groups of GNSS signal components, with the exception of the component in the L1 frequency subband. When examining individual vectors for the satellite–receiver pairs, signals with data transmission delays of up to 40 min were detected. There were also sharp decreases in the signal-to-noise ratio by 7 dBHz or more.
Keywords: GNSS, ionosphere, total electron content, TEC, ROTI, solar flare, solar activity, magnetic storms, signal-to-noise ratio, solar radio flux, 1415 MHz, EUV
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References:

  1. Afraimovich E. L., Perevalova N. P., GPS-monitoring verkhnei atmosfery Zemli (GPS monitoring of the Earth’s upper atmosphere), Irkutsk: GU NTS RVKH VSNTS SO RAMN, 2006, 480 p. (in Russian).
  2. Barabanova L. P., Minimization of GNSS geometric factors, J. Computer and Systems Sciences Intern., 2010, V. 49, No. 2, pp. 310–317, DOI: 10.1134/S1064230710020164.
  3. Kogogin D. A., Nasyrov I. A., Shindin A. V. et al., Dynamic changes of the ionospheric artificial airglow region caused by high-power radio waves based on a joint analysis of night-sky snapshots in the 630 nm line and total electron content variation maps, Radiophysics and Quantum Electronics, 2020, V. 63, Iss. 2, pp. 83–96, DOI: 10.1007/s11141-020-10037-9.
  4. Leonovich L. A., Otklik ionosfery na solnechnye vspyshki i magnitnye buri po dannym global’noi seti GPS: Avtoref. dis. … kand. fiz.-mat. nauk (Ionospheric response to solar flares and magnetic storms according to the global GPS network, Cand. ph.-math. sci. thesis), Irkutsk, 2003, 15 p. (in Russian).
  5. Maksimov D. S., Kogogin D. A., Nasyrov I. A., Zagretdinov R. V., Effects of September 5–12, 2017 solar flares on regional disturbance of Earth’s ionosphere as recorded by GNSS stations located in the Volga Federal District of the Russian Federation, Solnechno-zemnaya fizika, 2023, V. 9, No. 2, pp. 52–59 (in Russian), DOI: 10.12737/szf-92202306.
  6. Syrovatskiy S. V., Yasyukevich Yu. V., Vesnin A. M., Edemskiy I. K., Voeykov S. V., Zhivetiev I. V., The effect of solar flares on the ionosphere of the Earth during 24th cycle of solar activity, Uchenye zapiski fizicheskogo fakul’teta Moskovskogo Universiteta, 2018, No. 4, pp. 1840403-1–1840403-6 (in Russian).
  7. Yazev S. A., Isaeva E. S., Hos-Erdene B., Solar activity cycle 25: The first three years, Solnechno-zemnaya fizika, 2023, V. 9, No. 3, pp. 5–11 (in Russian), DOI: 10.12737/szf-93202301.
  8. Afraimovich E. L., Altyntsev A. T., Grechnev V. V., Leonovich L. A., Ionospheric effects of the solar flares as deduced from global GPS network data, Advances in Space Research, 2001, V. 27, Iss. 6–7, pp. 1333–1338, DOI: 10.1016/S0273-1177(01)00172-7.
  9. Afraimovich E. L., Demyanov V. V., Ishin A. B., Smolkov G. Ya., Powerful solar radio bursts as a global and free tool for testing satellite broadband radio systems, including GPS–GLONASS–GALILEO, J. Atmospheric and Solar-Terrestrial Physics, 2008, V. 70, No. 15, pp. 1985–1994, DOI: 10.1016/j.jastp.2008.09.008.
  10. Carrano C. S., Bridgwood C. T., Groves K. M., Impacts of the December 2006 solar radio bursts on the performance of GPS, Radio Science, 2009, V. 44, No. 1, Article RS0A25, 12 p., DOI: 10.1029/2008RS004071.
  11. de Paula E. R., Martinon A. R. F., Carrano C. et al., Solar flare and radio burst effects on GNSS signals and the ionosphere during September 2017, Radio Science, 2022, V. 57, No. 10, Article e2021RS007418, 15 p., DOI: 10.1029/2021RS007418.
  12. Demyanov V. V., Afraimovich E. L., Jin S., An evaluation of potential solar radio emission power threat on GPS and GLONASS performance, GPS Solutions, 2012, V. 16, No. 4, pp. 411–424, DOI: 10.1007/s10291-011-0241-9.
  13. Gurtner W., Estey L., RINEX: The Receiver Independent Exchange Format Version 2.11, IGS/RTCM RINEX Working Group, 2007, 57 p.
  14. Gurtner W., Estey L., RINEX: The Receiver Independent Exchange Format Version 3.02, IGS/RTCM RINEX Working Group, 2013, 83 p.
  15. Lozitsky V. G., Efimenko V. M., Clarified forecast for the 25th cycle of solar activity, 17 th Intern. Conf. “Monitoring of Geological Processes and Ecological Condition of the Environment”, 2023, Article Mon23-241, 5 p., DOI: 10.3997/2214-4609.2023520241.
  16. Pi X., Manucci A. J., Lindqwiser U. J., Ho C. M., Monitoring of global ionospheric irregularities using the worldwide GPS network, Geophysical Research Letters, 1997, V. 24, No. 18, pp. 2283–2286, DOI: 10.1029/97GL02273.
  17. Sato H., Jakowski N., Berdermann J. et al., Solar radio burst events on 6 September 2017 and its impact on GNSS signal frequencies, Space Weather, 2019, V. 17, pp. 816–826, DOI: 10.1029/2019SW002198.
  18. Qian L., Wang W., Burns A. G. et al., Solar flare and geomagnetic storm effects on the thermosphere and ionosphere during 6–11 September 2017, J. Geophysical Research: Space Physics, 2019, V. 124, Iss. 3, pp. 2298–2311, DOI: 10.1029/2018JA026175.
  19. Yasyukevich Yu. V., Yasyukevich A. S., Astafyeva E. I., How modernized and strengthened GPS signals enhance the system performance during solar radio bursts, GPS Solutions, 2021, V. 25, No. 2, Article 46, DOI: 10.1007/s10291-021-01091-5.