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Study of ionospheric scintillation during geomagnetic storms at equatorial anomaly region Bhopal
Indian Journal of Physics ( IF 1.6 ) Pub Date : 2020-07-10 , DOI: 10.1007/s12648-020-01781-9
Gupta C. Rashmi , S. Choudhary , A. K. Gwal

GPS L-band signals get affected by ionospheric scintillation; as a result, satellite navigation too gets affected. The most extreme scintillation activity is expected to occur near the equatorial region during geomagnetic storms. The behavior and morphology of low-latitude ionosphere are different from the other latitudes. The space weather conditions in low latitude show different nature because of the geomagnetic field. Due to penetration of soft, high energetic particles, the plasma density increases, which is the main source of generation of ionospheric irregularities scintillation. GPS scintillation at low latitudes is primarily associated with equatorial spread F. Equatorial spread F is caused by ionospheric irregularities with a spatial spectrum extending from 100 km to less than 1 m. When GPS signals encounter the ionospheric irregularities of various sizes produced during high geomagnetic and solar activity, they undergo drastic changes in their phase and amplitude scintillation indices. The accuracy and reliability of GPS system get affected by scintillation. Also the atmosphere air molecule’s content and deviation of electrons, protons, neutrons according to flow rate are observed. In the present paper, we have studied the scintillation activity at low-latitude station Bhopal.



中文翻译:

博帕尔赤道异常区地磁暴期间电离层闪烁的研究

GPS L波段信号受到电离层闪烁的影响;结果,卫星导航也会受到影响。在地磁风暴期间,预计最极端的闪烁活动将发生在赤道附近。低纬度电离层的行为和形态与其他纬度不同。由于地磁场,低纬度的空间天气状况显示出不同的性质。由于软高能粒子的渗透,等离子体密度增加,这是电离层不规则闪烁产生的主要来源。低纬度的GPS闪烁主要与赤道传播F有关。赤道传播F由电离层的不规则引起,其空间频谱范围从100 km延伸到小于1 m。当GPS信号遇到在高地磁和太阳活动期间产生的各种大小的电离层不规则性时,它们的相位和幅度闪烁指数将发生剧烈变化。GPS系统的准确性和可靠性会受到闪烁的影响。还观察到大气中空气分子的含量以及根据流速的电子,质子,中子的偏离。在本文中,我们研究了低纬度波帕尔站的闪烁活动。

更新日期:2020-07-10
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