Though the data of eight GPS stations, the paper calculates slant ionospheric delay by using WASS ionospheric grid algorithm, and comparison is made between prediction values and observed ones.

• 摘要对不同纬度的8个GPS观测台站得到的数据，采用广域增强系统(WASS)电离层网格算法计算了斜向电离层时延，并将计算结果同实际观测值之间的差别进行了统计分析。