A characteristic analysis of low-latitude NavIC signal intensity fading

Abstract

The current work for the first time aims to characterize the ionospheric scintillation on NavIC signals using Nakagami and a-µ distribution as a representation of the fading effect. A clear depiction of the fading effect caused by scintillation on NavIC signals for an intense geomagnetic storm where the Dst Index has dropped to a minimum value of 124nT. The observed values of carrier to noise ratio (dB-Hz) for PRNs 2, 5 and 6 have dropped below 30 dB-Hz and have approached to value of zero between 22:00 to 0 LT(h). The severity of {S-{{4_c}}} index during that time peaked beyond the value of 0.5 as observed from PRN 2 of NavIC and the value of intensity fading that has reached up to-8dB. This paper lays the foundation for the intensity fading study of NavIC signals over region near EIA and another region near to magnetic equator on September 8, 2017. © 2022 URSI.