This work is in the frame of the PhD research project:
“Scintillation effects on GNSS: monitoring and data
treatment development” carried out at the Nottingham
Geospatial Institute of the University of Nottingham;
VR thanks NGI and the supervisors for supporting his
research project. This study is also partially supported
by PNRA (Italian Antarctic Research Program) and
CNR (Italian Research Council) in the frame of Polarnet
arctic activities. The research work carried out by
M. Aquino, A. Dodson and C. Hancock at the Univer-
sity of Nottingham is supported by the Engineering and
Physical Sciences Research Council (EPSRC) through
grant EP/H003479/1.