With the development of BD navigation system,it is pressing to develop satellite-based augmentation system of BD system.Based on the observation data on March 20,2016 of 10 GNSS reference stations from Cmonoc,the accuracy of grid ionospheric correction algorithm of BDSBAS in part of stations in China was verified.Grid ionospheric model with Klobuchar model was compared,and tested the error of grid ionospheric vertical delay GIVE.The results show that correction effect of grid ionospheric model is superior to that of Klobuchar model and the correction error is in a normal range,so it is workable to apply BD grid ionospheric model in the area of China.%随着北斗卫星导航系统的发展日益成熟,开发基于北斗的星基增强系统已刻不容缓,而电离层误差是影响星基增强系统定位精度的重要误差源.利用中国大陆构造环境监测网络的10个GNSS参考站在2016年3月20日的观测数据,验证了基于北斗导航系统的星基增强系统格网电离层修正算法在中国地区部分站点的修正精度,与Klobuchar模型修正法进行了对比,并检验了格网电离层垂直延迟的修正误差GIVE.结果表明,格网电离层修正算法的修正精度普遍优于Klobuchar模型修正法;修正误差也在正常范围内,进一步说明格网电离层延迟算法在中国地区的应用是可行的.
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