Near-real-time Ionosphere Modeling Based on Regional GPSData

摘要

We present a GPS-derived regional ionospherernmodel, which estimates Total Electron Content (TEC) inrnrectangular grids on the spherical shell over Korea. The GPSrndata from nine GPS stations were used. The pseudorange datarnwere phase-leveled by a linear combination of pseudorangesrnand carrier phases. During a quiet day of solar activity, thernregional ionosphere map indicated 30-45 Total Electron ContentrnUnit (TECU) at the peak of the diurnal variation. Inrncomparison with the Global Ionosphere Map of the Center forrnOrbit Determination in Europe, RMS differences were at thernlevel of 4-5 TECU for five days.