The detection and repair of cycle slip in the active ionosphere is a difficult point in GNSS data preprocessing.For the problem that the cycle slip is difficult to detect and repair correctly during the active period of the ionosphere,the sliding window filter is used to predict the ionospheric delay variation and then the cycle slip.The detection combination performs ionospheric delay correction to properly detect and fix the cycle slip.This paper firstly uses the 99％successful detection rate and 1％miss detection rate to screen out the optimal cycle slip detection combination,and then the iono-spheric delay correction for the third cycle slip detection combination.Through experimental analysis,the method can cor-rectly detect and fix all cycle slips.
关键词
滑动窗口滤波/周跳/电离层/探测与修复/GNSS
Key words
sliding window filtering/cycle slip/ionosphere/detection and repair/GNSS
维普
万方数据