Abstract：The vertical total electron content(VTEC) is obtained using uncombined precise point positioning technique, while a series of COSMIC ionospheric occultation products which are near GNSS stations are collected. Both are used as common constraint conditions to retrieve electron density profile above these stations using functional model in near real-time. To verify the feasibility of this new method, GNSS observation data from the last weeks of March, June, September, and December in 2016 at 11 IGS stations in east Asia, as well as corresponding COSMIC ionospheric products(ionprf) occurring in or near these stations are collected. The results are compared with COSMIC occultation electron density profile products, which are seen as true values. The preliminary statistical results show a good consistency between the retrieved electron density profile using the ground-based singular GNSS station and space-based occultation products. The precision of f0F2 and hmF2 parameters are both better than those of IRI2016.
WANG Jianying,YE Shirong,XIA Pengfei et al. Near Real-Time Inversion of Ionospheric Electron Density by Combining with Singular Ground-Based GNSS Receiver and Space-Based Occultation[J]. jgg, 2018, 38(10): 1016-1020.
