K. S. Paul

TL;DR: The largest geomagnetic storm in solar cycle 24 occurred during March 17-18, 2015 where the main phase of the storm reached the negative minimum at 22:00 UT as discussed by the authors.

TL;DR: In this paper, the authors provided the proportion of time during scintillation patches that decorrelations are found across GPS L1, L2 and L5 frequencies associated with high S4, corresponding high values of scattering coefficients and large receiver position deviations thereby seriously compromising the performance of satellite based navigation system.

TL;DR: In this paper, the poleward gradient of the EIA introduces more intense propagation effects on transionospheric satellite links in comparison to the equatorward gradient, and a threshold value of poleward TEC gradient is calculated above which there is a probability of scintillation at Calcutta with S4 ≥ 0.4.

TL;DR: In this paper, the occurrence rate of nighttime spread F events and their diurnal, seasonal and solar cycle variation observed over three stations in the European longitude sector namely Nicosia (geographic Lat: 35.29

TL;DR: In this paper, the authors showed increased availability of GPS, GLONASS and GALILEO from Calcutta compared to GPS-only scenario and estimates intense scintillation-free (S4, < 0.6) satellite vehicle look angles at different hours of the post-sunset period 19:00-01:00LT during March 2014.