Abstract The International GNSS Service (IGS) has recently accepted for official release a
new ionospheric product to characterize ionospheric irregularity and intensity as derived
from multi-site ground-based GPS observations. This product was developed and
implemented in the Space Radio-Diagnostic Research Center (SRRC), University of Warmia
and Mazury. The SRRC has implemented this approach using in-house software for multi-
step processing and interpretation of carrier phase delays in dual-frequency GPS signals …

Today, society increasingly relies on GNSS signals across a wide range of industries and
critical systems. It is important to understand how satellite navigation signals passing
through the earth's ionosphere can be disrupted. The objective of this work is to develop,
establish and continuously threat product and supporting service on order to represent the
quiet-time background of the ionospheric irregularities occurrence, as well as strong
ionosphere fluctuation events responsible for degrading of the GPS positioning and radio …