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

Remote Sensing

Artem Setov¹  Artem Vesnin¹  Semen Syrovatskii¹  Yury Yasyukevich¹  Anna Yasyukevich¹  Roman Vasilyev¹  Maria Globa¹  Alexander Kiselev¹  Konstantin Ratovsky¹ 

[1] Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences, Irkutsk 664033, Russia;

关键词: small-scale irregularities;    ionospheric scintillations;    spread-F;    S4;    geomagnetic storm;    precise point positioning;   

DOI  :  10.3390/rs12101579

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown