Geomagnetic storms, super-storms, and their impacts on GPS-based navigation systems

被引：106
作者：
Astafyeva, E. [1 ]
Yasyukevich, Yu. [2 ,3 ]
Maksikov, A. [3 ]
Zhivetiev, I. [4 ]
机构：
[1] Univ Paris Diderot, Sorbonne Paris Cite, Inst Phys Globe Paris, UMR CNRS 7154, Paris, France
[2] Inst Solar Terr Phys SB RAS, Irkutsk, Russia
[3] Irkutsk State Univ, Irkutsk 664003, Russia
[4] Inst Cosmophys Res & Radiowave Propagat FEB RAS, Petropavlovsk Kamchatski, Russia
来源：
SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS | 2014年 / 12卷 / 07期
基金：
欧洲研究理事会;
关键词：
TOTAL ELECTRON-CONTENT; IONOSPHERIC IRREGULARITIES; F-REGION; MIDLATITUDE; SCINTILLATIONS; EQUATORIAL; FIELD; ENHANCEMENTS; PERFORMANCE;
D O I：
10.1002/2014SW001072
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using data of GPS receivers located worldwide, we analyze the quality of GPS performance during four geomagnetic storms of different intensity: two super-storms and two intense storms. We show that during super-storms the density of GPS Losses-of-Lock (LoL) increases up to 0.25% at L1 frequency and up to 3% at L2 frequency, and up to 0.15% (at L1) and 1% (at L2) during less intense storms. Also, depending on the intensity of the storm time ionospheric disturbances, the total number of total electron content (TEC) slips can exceed from 4 to 40 times the quiet time level. Both GPS LoL and TEC slips occur during abrupt changes of SYM-H index of geomagnetic activity, i.e., during the main phase of geomagnetic storms and during development of ionospheric storms. The main contribution in the total number of GPS LoL was found to be done by GPS sites located at low and high latitudes, whereas the area of numerous TEC slips seemed to mostly correspond to the boundary of the auroral oval, i.e., region with intensive ionospheric irregularities. Our global maps of TEC slips show where the regions with intense irregularities of electron density occur during geomagnetic storms and will let us in future predict appearance of GPS errors for geomagnetically disturbed conditions.
引用
收藏
页码：508 / 525
页数：18
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