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Open AccessArticle

Small-Scale Ionospheric Irregularities of Auroral Origin at Mid-latitudes during the 22 June 2015 Magnetic Storm and Their Effect on GPS Positioning

1
Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences, 664033 Irkutsk, Russia
2
Lomonosov Moscow State University, Faculty of Physics, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(10), 1579; https://doi.org/10.3390/rs12101579
Received: 16 April 2020 / Revised: 12 May 2020 / Accepted: 14 May 2020 / Published: 15 May 2020
(This article belongs to the Special Issue Remote Sensing of Ionosphere Observation and Investigation)
Small-scale ionospheric irregularities affect navigation and radio telecommunications. We studied small-scale irregularities observed during the 22 June 2015 geomagnetic storm and used experimental facilities at the Institute of Solar-Terrestrial Physics of the Siberian Branch of the Russian Academy of Sciences (ISTP SB RAS) located near Irkutsk, Russia (~52°N, 104°E). The facilities used were the DPS-4 ionosonde (spread-F width), receivers of the Irkutsk Incoherent Scatter Radar (Cygnus A signal amplitude scintillations), and GPS/GLONASS receivers (amplitude and phase scintillations), while 150 MHz Cygnus A signal recording provides a unique data set on ionosphere small-scale structure. We observed increased spread-F, Cygnus A signal amplitude scintillations, and GPS phase scintillations near 20 UT on 22 June 2015 at mid-latitudes. GPS/GLONASS amplitude scintillations were at a quiet time level. By using global total electron content (TEC) maps, we conclude that small-scale irregularities are most likely caused by the auroral oval expansion. In the small-scale irregularity region, we recorded an increase in the precise point positioning (PPP) error. Even at mid-latitudes, the mean PPP error is at least five times that of the quiet level and reaches 0.5 m. View Full-Text
Keywords: small-scale irregularities; ionospheric scintillations; spread-F; S4; geomagnetic storm; precise point positioning small-scale irregularities; ionospheric scintillations; spread-F; S4; geomagnetic storm; precise point positioning
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MDPI and ACS Style

Yasyukevich, Y.; Vasilyev, R.; Ratovsky, K.; Setov, A.; Globa, M.; Syrovatskii, S.; Yasyukevich, A.; Kiselev, A.; Vesnin, A. Small-Scale Ionospheric Irregularities of Auroral Origin at Mid-latitudes during the 22 June 2015 Magnetic Storm and Their Effect on GPS Positioning. Remote Sens. 2020, 12, 1579.

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