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中文摘要：
利用通过GEO卫星双频载波相位观测量计算电离层垂直总电子含量时变率（RVTEC）的方法，研究了RVTEC对太阳X射线耀斑的响应。根据载波相位观测方程，得到了RVTEC的计算公式。选取3个MGEX测站对2013～2015年间9次X级耀斑的观测数据进行了计算分析，主要结果包括：①x级耀斑期间RVTEC不一定发生明显的增大；②RVTEC与耀斑的级别、太阳天顶角没有绝对的对应关系；③所有X3．2级以下耀斑观测结果中RVTEC最大不超过0．03TECu／S。
英文摘要：
Time variation rate of ionospheric vertical total electron content （ RVTEC ） is calculated using dual - frequency carrier - phase observations of GEO satellites and its response to solar X - ray flare is studied in this paper. The formula for cal- culating RVTEC is deduced according to carrier- phase observation equation. Three MGEX stations are selected to calculate the observation data of nine times of X - class flares occurred during 2013 to 2015, and the results show that： （ 1 ） RVTEC does not always increase obviously during X - class flares ; （ 2 ） there is no absolute relationship between RVTEC and the level of flare or solar vertex angle ; （3 ） the maximal observation results of RVTEC is 0.03 TECu/s for flares below X3.2 level.
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