Vertical total electron content (VTEC) has great importance in describing the ionosphere.
VTEC values are commonly distributed in regular grids by means of so‐called global …

Real− time single− frequency precise point positioning (PPP) is a promising low− cost
technique for achieving high− precision navigation with sub− meter or centimeter− level …

The eruption of large volcanoes may potentially disturb the upper atmosphere, causing
disturbances in ionospheric plasma and triggering irregular changes in the Total Electron …

Single frequency users of the Global Navigation Satellite System (GNSS) should correct the
ionospheric delay to obtain positioning solutions. A valuable source of ionospheric delay …

Ionospheric corrections are crucial for PPP-RTK. Apart from the deterministic part of
ionospheric corrections, the stochastic part is also essential in augmented high-precision …

The global ionospheric model is the most effective way to study the structure and variation of
the global ionosphere. However, the current global ionosphere maps (GIMs) have the defect …

Real− time single− frequency precise point positioning (PPP) is a promising low− cost
technique for achieving high− precision navigation with sub− meter or centimeter− level …

Total electron content and electron density are the fundamental parameters that determine
the main properties of the ionosphere. We have observed variation of Global Positioning …

Vertical total electron content (VTEC) is one of the main parameters used to describe the
ionosphere. The VTEC values can be provided to correct ionospheric delay errors or to …