Analysis of Ionospheric Scintillations using GPS and NavIC Combined Constellation

RAIM Algorithms Analysis for a Combined GPS/GALILEO Constellation

How far a user can rely on his navigation system is a central question for safety of life applications like air navigation especially in approach phases. For Oceanic, En route or Non Precision Approach phases, the integrity requirements as defined by the ICAO (International Civil Aviation Organization) should be fulfilled by the future Galileo Safety of Life Service. This paper presents the per...

GPS Carrier Tracking Loop Performance in the presence of Ionospheric Scintillations

The performance of several GPS carrier tracking loops is evaluated using wideband GPS data recorded during strong ionospheric scintillations. The aim of this study is to determine the loop structures and parameters that enable good phase tracking during the power fades and phase dynamics induced by scintillations. Constant-bandwidth and variable-bandwidth loops are studied using theoretical mod...

Ionospheric Modelling using GPS to Calibrate the MWA. II: Regional ionospheric modelling using GPS and GLONASS to estimate ionospheric gradients

We estimate spatial gradients in the ionosphere using the Global Positioning System (GPS) and GLONASS (Russian global navigation system) observations, utilising data from multiple GPS stations in the vicinity of Murchison Radio-astronomy Observatory (MRO). In previous work the ionosphere was characterised using a single-station to model the ionosphere as a single layer of fixed height and this ...

Comparison of GPS and Constellation

Analysis of ionospheric electron density distribution from GPS/MET occultations

In this paper we present results from analysis of GPS/MET occultation data obtained from the University Corporation for Atmospheric Research database. We have used High-Rate occultation data to study the performance of an earlier 4D ionospheric electron content model|obtained tomographically with the use of the GPS constellation|with satisfactory results. In addition, we have processed UCAR Lev...