ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 1, pp. 31-39

Effects of the 17 March 2015 geomagnetic storm on GPS single-frequency positioning

E.I. Danilchuk 1 , Yu.V. Yasyukevich 2, 1 , A.S. Yasyukevich 2 , D.A. Zatolokin 2 
1 Irkutsk State University, Irkutsk, Russia
2 Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
Accepted: 15.02.2021
DOI: 10.21046/2070-7401-2021-18-1-31-39
We studied the effects of the 17 March 2015 geomagnetic storm on the GPS single-frequency positioning. We used data from GPS receivers located at different latitudes in the American and Asian regions. Analysis involved coordinates estimation based on different ionosphere corrections: Klobuchar model (GPS), GEMTEC (Global empirical model of total electron content), and data from Global Ionospheric Maps. We found 5–7 times increases in positioning errors. Effects of the geomagnetic storm differ in the American and Asian regions. In the American region the effect started during the storm main phase and continued during the storm recovery phase. In the Asian region the effects continued during the storm recovery phase, except equatorial stations. The revealed difference is most likely caused by the difference in the local time of the geomagnetic storm onset and the corresponding features of the ionospheric processes. Due to the total electron content overestimation during the storm, the Klobuchar-based ionospheric correction could increase the 3D positioning error.
Keywords: GPS, geomagnetic storm, positioning errors, Klobuchar model, model GEMTEC, Global Ionospheric Maps
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