Sandro M. Radicella

TL;DR: NeQuick as discussed by the authors is a three-dimensional and time dependent ionospheric density model developed at the Aeronomy and Radiopropagation Laboratory of the Abdus Salam International Centre for Theoretical Physics (ICTP), Trieste, Italy and at the Institute for Geophysics, Astrophysics and Meteorology of the University of Graz, Austria.

TL;DR: The conclusions achieved are: (1) the levelled carrier-phase ionospheric observable is affected by a systematic error, produced by code-delay multi-path through the levelling procedure; and (2) receiver IFB may experience significant changes during 1 day.

TL;DR: In this paper, the authors describe the evolution of the "profiler" proposed by Di Giovanni and Radicella (1990) to calculate the electron density distribution with height up to the F2 peak based on the Epstein layer.

TL;DR: In this article, the electron density height profiles and their first derivatives with height from the E region to the peak of the F2 layer, as calculated by inversion of ionogram traces, are reproduced with good accuracy by formally identical simple analytical functions, different from those used by other authors.

TL;DR: In this paper, the authors compare ISIS-2 topology profiles with IRI and NeQuick topology models and identify weak points in their topology formulation, and present an alternative formulation based on k values derived from experimental profiles.