第24太阳活动周中国地区电离层闪烁统计特性研究

Statistical Characteristics of Ionospheric Scintillation in China Based on the Data of GNSS during 24th Solar Cycle

利用第24太阳活动周中国多个地区GNSS电离层闪烁监测站数据,统计分析中国中低纬地区电离层闪烁特性.结果显示:电离层闪烁主要发生在春秋分及夜间20:00-02:00 LT时段;在28°N以南地区,纬度越低电离层闪烁强度和发生概率越高;电离层闪烁发生概率与太阳活动呈正相关,太阳活动上升年电离层闪烁发生概率高于下降年;不同强度地磁活动条件下,电离层闪烁均可能发生,且与地磁活动强度整体呈负相关.通过研究电离层闪烁统计特性,可以为电离层闪烁机理的深入研究、预报及工程应用提供参考.

Based on the data of GNSS ionospheric scintillation monitoring stations in China during the 24 th solar cycle,the characteristics of ionospheric scintillation was carried out in middle and low latitudes in China.The statistical results showed that:ionospheric Scintillation mainly occurred in the spring and autumn equinox and during 20:00-02:00 LT at night;in the area south of 28°N,the lower the latitude,the higher the intensity and probability of ionospheric scintillation;the probability of ionospheric scintillation was positively correlated with solar activity,and the probability of ionospheric scintillation was higher in the rising year than in the falling year;the ionospheric scintillation may occur under different condition intensities of geomagnetic activity,and which was negatively correlated with the intensity of geomagnetic activity.The results of the statistical study of ionospheric scintillation in this paper can provide reference for further study,prediction and engineering application of ionospheric scintillation mechanism.