NavIC用于研究印度EIA地区电离层的性能
Performance of NavIC for studying the ionosphere at an EIA region in India
摘要：
本文着重介绍了NavIC在印度次大陆地区电离层研究中的性能。该研究使用IIT Incubator一年（2017-18）的数据进行，该位置靠近赤道电离异常（EIA）的北峰。已经观察到，即使没有单独的误差校正，结果也在大多数时间内在GPS VTEC估计周围的IPP的1 \ensuremath{^{\circ}} x 1 \ensuremath{^{\circ}}网格上观察到的NavIC VTEC估计的$\pm20\%$内。此外，还介绍了在同一地点的两次不同磁暴（2017年9月8日和28日）期间以及使用GPS和NavIC覆盖印度次大陆的其他IGS站的电离层响应。该分析揭示了2017年9月磁暴期间TEC的类似变化，表明NavIC适合研究印度次大陆上空的空间天气事件以及电离层研究。
英文摘要：
This paper emphasizes on NavIC's performance in ionospheric studies over the Indian subcontinent region. The study is performed using data of one year (2017-18) at IIT Indore, a location near the northern crest of Equatorial Ionization Anomaly (EIA). It has been observed that even without the individual error corrections, the results are within $\pm20\%$ of NavIC VTEC estimates observed over the 1\ensuremath{^{\circ}} x 1\ensuremath{^{\circ}} grid of IPP surrounding the GPS VTEC estimates for most of the time. Additionally, ionospheric response during two distinct geomagnetic storms (September 08 and 28, 2017) at the same location and other IGS stations covering the Indian subcontinent using both GPS and NavIC has also been presented. This analysis revealed similar variations in TEC during the geomagnetic storms of September 2017, indicating the suitability of NavIC to study space weather events along with the ionospheric studies over the Indian subcontinent.
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