Analyses of Phase Scintillation Observations Made by a Static Triple Frequency GPS-based Monitor Located Near the Equatorial Ionization Anomaly Peak

We present analyses of phase scintillation measurements made during a 5-month period (November 2014 - March 2015) by a triple-frequency (L1, L2C and L5) GPS receiver located in São José dos Campos, Brazil near the peak of the Equatorial Ionization Anomaly. The location of the receiver and the large number of observations available for this study provide an opportunity to investigate different scintillation scenarios, including those associated with highly disturbed ionospheric events. Phase scintillation has been widely investigated at high latitudes but little has been reported in terms of observations at equatorial and low latitudes. We characterize the observed phase scintillation events according to the σφ index and investigate its relation with the amplitude scintillation index S4. The correlation between σφ for the three different frequencies are also investigated. We will present and discuss the results of our analysis and the likely implications for the GPS receivers under similar ionospheric conditions.