克里金插值法内插IGS电离层图精度分析  

Analyse the Interpolation Accuracy of IGS Ionospheric Maps Using the Kriging Interpolation Method

作　　者：崔书珍[1] 周金国[2] 

机构地区：[1]重庆工程职业技术学院,重庆402260 [2]国家测绘地理信息局重庆测绘院,重庆400015

出　　处：《全球定位系统》2016年第4期43-47,共5页Gnss World of China

基　　金：重庆工程职业技术学院重点课题(编号:KJA201408);重庆市教育委员会科学技术项目(编号:KJ1503308)

摘　　要：采用克里金插值法和常用插值方法内插IGS电离层图数据,获得重庆CORS网5个基准站电离层穿刺点处的VTEC值,和利用5个基准站的GPS平滑伪距观测值解算的VTEC值进行比较,发现克里金插值法和常用插值方法的内插精度相当,故克里金插值法内插IGS电离层图的精度是可靠的。Through interpolating IGS ionospheric maps adopted Kriging interpolation method and conventional interpolation methods,the vertical total electron contents（VTEC）of the five base stations in Chongqing CORS are obtained.Comparing the interpolation results to the VTEC with GPS smoothed pseudo-range observations of the five base stations,it is found that the accuracy of Kriging interpolation method and conventional methods is approximately equal,which is proved that Kriging interpolation method can be adopt to interpolate the IGS maps,and its accuracy is reliable.

关 键 词：克里金插值法 双线性插值法 Junkins加权插值法 IGS电离层图 垂直总电子含量 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]