三频观测量能形成更多优良组合,有利于提高周跳探测和修复的成功率。针对目前北斗已经实现三频观测数据播发,为周跳探测与修复提供了新方法和新途径的现状,该文基于多频伪距相位组合法对北斗三频实测数据进行了数据预处理。结合北斗三频载波相位组合的特性,给出了组合观测量的选取标准,并且利用一组实测数据进行了验证。实验结果表明,在数据采样率较高、历元间电离层延迟变化可忽略时,根据该方法选取的最优伪距相位组合可探测和修复观测数据中的所有周跳。
The cycle slip detection of BeiDou triple-frequency observation data was introduced,and a new method of cycle slip detection was given.More excellent combinations of data may be got using triplefrequency data,which is beneficial for improving the accuracy of cycle slip detecting and repairing.This paper gave the selection criteria of observation combination based on the characteristics of BeiDou triplefrequency carrier phase combination,and verified with a set of experimental data.The result showed that if the data sampling rate was higher,the ionospheric delay variation between epoch could be ignored,this method could detect and repair all cycle slip successfully.