The aim of the new generation of Global Geodetic Observing System is a millimeter-level
accuracy in positioning, with a crucial role to be played by Global Navigation Satellites …

Global Navigation Satellite System (GNSS) observation insufficiency limits the development
of the voxel-based computerized ionospheric tomography (CIT) technique. Electron …

The inhomogeneous distribution of Global Navigation Satellite System (GNSS) data is a
significant problem for global GNSS computerized ionospheric tomography (CIT). By …

The incomplete geometrical coverage of the Global Navigation Satellite System (GNSS)
makes the ionospheric tomographic system an ill-conditioned problem for ionospheric …

Many efforts have been done in the last decades to improve the formulation of ionospheric
models based on data derived from the Global Navigation Satellite System (GNSS). Despite …

The ionosphere over the low latitude region, where East Africa falls, is associated with high
perturbations arising from numerous phenomenon such as Equatorial Ionization Anomaly …

PPP-RTK (Precise Point Positioning–Real Time Kinematic) is a positioning method by
GNSS (Global Navigation Satellite Systems), based on the SSR (State Space …

Abstract Global Navigation Satellite Systems (GNSS) have become an integral part of
modern life, supporting various applications, from precise positioning and navigation to …

To generate high-quality reconstructions of ionospheric electron density (IED), we propose
an extended simultaneous algebraic reconstruction technique (ESART). The ESART method …

Ionospheric irregularities are a significant source of error in GNSS positioning and
navigation as they cause scintillations in trans-ionospheric signals. The elliptical orbit and …