中文摘要：

通过不同的方案设计对中国陆态网测站进行解算,研究电离层高阶项延迟对测站坐标和接收机钟差的影响,并分析在不同地磁模型下的影响差异。结果表明,在太阳活动较为活跃时,电离层高阶项延迟对陆态网测站垂向坐标的影响能达到1.2cm,对接收机钟差的影响接近4.4mm;不同地磁模型下电离层高阶项延迟的影响很小。还分析了纬度、基线方向与长度对电离层高阶项延迟的影响。

英文摘要：

By designing different scenarios,we can solve stations of CMONOC,in order to analyze the influences of higher-order terms ionospheric delay and receiver clock error to CMONOC stations＇ coordinates,and the differences of higher-order terms ionospheric delay＇s effect under different geomagnetic models.The results show that as solar activity becomes more active,the change of higher-order terms ionospheric delay to CMONOC stations＇ vertical coordinates can reach 1.2cm.The influence on the receiver clock error is close to 4.4mm,the influences of the higher-order ionospheric delay model under different geomagnetic conditions are little.Finally,we discuss and analyze the effect of latitude,baseline length and direction to the higher-order terms ionospheric delays.