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This paper emphasizes on NavIC's performance in ionospheric studies over theIndian subcontinent region. The study is performed using data of one year(2017-18) at IIT Indore, a location near the northern crest of EquatorialIonization Anomaly (EIA). It has been observed that even without the individualerror corrections, the results are within $\pm20\%$ of NavIC VTEC estimatesobserved over the 1\ensuremath{^{\circ}} x 1\ensuremath{^{\circ}} grid of IPPsurrounding the GPS VTEC estimates for most of the time. Additionally,ionospheric response during two distinct geomagnetic storms (September 08 and28, 2017) at the same location and other IGS stations covering the Indiansubcontinent using both GPS and NavIC has also been presented. This analysisrevealed similar variations in TEC during the geomagnetic storms of September2017, indicating the suitability of NavIC to study space weather events alongwith the ionospheric studies over the Indian subcontinent.

Performance of NavIC for studying the ionosphere at an EIA region in India