利用GPS资料研究太阳耀斑引起的TEC变化率

Studying Change Rate of Ionosphere TEC Arousing by Solar Flare with GPS Data

给出了利用双频GPS载波相位观测值和相应的导航文件计算各个卫星在天顶方向的电子总量的变化率的方法,计算了2003年10月下旬发生的一系列太阳耀斑引起的各个卫星的VΔTEC变化。分析表明当发生的耀斑正对地球时,VΔTEC有明显的变化;当没有耀斑发生以及发生了耀斑但背对地球时则没有明显的变化。

This paper introduces a method of calculating vertical change rate of TEC of each satellite with the dual - frequency GPS phase observation and corresponding to navigation file,and calculates some VATEC of each satellite arousing by solar flare of the last ten - day of October in 2003 by it. Analysis shows an obvious rate of TEC when a solar flare happens and no obvious rate when no solar flare or it is at the leeward of the earth.