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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Global View of Ionospheric Disturbance Impacts on Kinematic GPS Positioning Solutions During the 2015 St. Patrick's Day Storm
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Global View of Ionospheric Disturbance Impacts on Kinematic GPS Positioning Solutions During the 2015 St. Patrick's Day Storm

机译：全球电离层扰动的影响运动在GPS定位解决方案2015年圣派翠克日风暴

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摘要

The 2015 St. Patrick's Day geomagnetic storm caused numerous disturbances of the ionosphere, particularly, plasma irregularities, large-scale traveling ionospheric disturbances, and equatorial ionization anomaly enhancement. This study for the first time quantifies the global-scale impacts of the ionospheric disturbances on Global Positioning System (GPS) precise point positioning (PPP) solutions during this extreme space weather event by taking advantage of 5,500 + GNSS stations installed worldwide. The overall impact was more severe at high latitudes, while PPP degradation at low latitudes was associated with different types of ionospheric disturbances. Specifically, our results show that kinematic PPP solutions degraded following an intensified auroral particle precipitation during the storm's main phase (06-23 UT) when up to ~70% of the high-latitude stations experienced degraded position solutions in the multimeter range at 16-18 UT. Around magnetic noon and midnight, the storm-induced plasma irregularities caused notable PPP errors (>10 m) at high latitudes. Interhemispheric differences were observed with a more severe impact seen in the Southern Hemisphere, where PPP outage lasted for ~12 hr during the second main phase (12-23 UT). At low latitudes, post sunset equatorial plasma irregularities were suppressed across most longitudes, but large PPP errors (>2 m) associated with storm-induced plasma bubbles were registered at the Indian sector at 14-18 UT. The storm-induced equatorial ionization anomaly enhancement and large-scale traveling ionospheric disturbances were responsible for the low-latitude PPP degradation at dayside sectors. This study fills the research gap between physical and practical aspects of severe ionospheric storm effects.
机译：2015年的圣派翠克日地磁风暴无数的电离层扰动引起的,特别是,等离子违规行为,大规模旅行电离层扰动赤道电离异常增强。第一次量化研究全球范围内电离层的影响全球定位系统(GPS)干扰在精密单点定位(PPP)解决方案通过采取这种极端空间天气事件利用5500 + GNSS站安装在全球范围内。高纬度地区,而购买力平价退化较低与不同类型的纬度有关电离层扰动。结果表明,运动购买力平价的解决方案退化后加剧了极光在风暴的主要粒子沉淀阶段(06-23 UT) ~ 70%的高纬度地区站经验丰富的退化位置在万用表范围的解决方案16日至18日UT。storm-induced等离子违规行为造成的引人注目的购买力平价错误(> 10米)在高纬度地区。观察了两半球间的差异在南方更严重的影响半球,购买力平价故障持续了~ 12小时于在第二个主要阶段(12日至23日UT)。纬度,日落赤道等离子体在大多数违规行为被抑制经度,但购买力平价大错误(> 2米)与storm-induced等离子体泡沫在印度注册部门在14 - 18 UT。storm-induced赤道电离异常增强和大规模旅行电离层骚乱负责低纬度PPP退化的光面行业。本研究填补了研究之间的差距严重的身体和实践方面电离层风暴的影响。

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