论文部分内容阅读
为开展赤道区的电离层闪烁形态特性及相关物理过程的研究,空间中心海南台站建立了一套 GPS电离层闪烁监测系统.该系统是利用 Plessey GPS Builder-2 系统开发的,对软件的源码进行了修改,使其能以高采样率(50/s)同时并行记录11个通道 GPS 信号强度数据.对2003年7—12月间 L-波段电离层闪烁事件的初步统计分析结果表明,电离层闪烁主要发生在日落后到午夜附近,其中9—11月较7—8月闪烁发生和结束的时间明显提前;电离层闪烁发生的频率和强度在9—11月较其他月份明显增强,其中10月达到最大;电离层闪烁的逐日变化具有很强的随机性,闪烁的发生在秋分附近9月底到10月中旬的磁静日期间达到最大;太阳和地磁活动的增强通常会抑制电离层闪烁的发生,这种情形在秋分附近尤为明显.
In order to study the characteristics of ionospheric scintillation in the equatorial zone and related physical processes, a set of GPS ionospheric scintillation monitoring system was set up in Hainan Station, the space center. Developed using the Plessey GPS Builder-2 system, the system’s source code was modified to simultaneously record 11 channel GPS signal strength data simultaneously at high sampling rates (50 / s). The preliminary statistical analysis of the L-band ionospheric scintillation events from July to December in 2003 shows that the ionospheric scintillation mainly occurs from sunset to near midnight, with the period of 9-11 months flickering and ending at 7-8 months Obviously ahead of time; the frequency and intensity of ionospheric scintillation increased significantly from September to November, with the maximum being reached in October; the daily variation of ionospheric scintillation has a strong randomness, and scintillation occurred near the end of September Magnetostatic maximum reached in mid-October; increased solar and geomagnetic activity usually suppressed the occurrence of ionospheric flicker, which was particularly noticeable near the autumnal equinox.