大地测量与地球动力学2011，Vol.31Issue(2)：94-98,106,6.
基于移动窗口的抗差Chebyshev多项式拟合探测与修复单频GPS周跳
CYCLE SLIP DETECTION AND CORRECTION FOR SINGLE-FREQUENCY GPS DATA BASED ON SLIDING WINDOW OF CHEBYSHEV POLYNOMIAL FITTING OF ROBUST ESTIMATION
摘要
Abstract
Double difference carrier phase observations have good smoothness, because they eliminate the common errors. After differencing between adjacent epochs in double difference observation sequences, cycle slips act as gross errors. When using Chebyshev polynomial for fitting double difference observations, taking into account of the thoughts of robust estimation, the order of Chebyshev polynomial fitting and the length of fitting arc, cycle slips detection and correction for single-frequency GPS data based on sliding window of Chebyshev polynomial fitting of robust estimation was proposed. Ll-frequency carrier phase data with sampling interval of 60 seconds and 15 seconds were applied for the test. Test results show that this algorithm can effectively detect multi-epoch cycle slips and continuous cycle slips, and cycle slips can be accurately repaired.关键词
GPS/周跳/移动窗口/抗差估计/Chebyshev多项式Key words
GPS/ cycle slips/ sliding window/ robust estimation/ Chebyshev polynomial分类
天文与地球科学引用本文复制引用
刘宁,熊永良,徐韶光..基于移动窗口的抗差Chebyshev多项式拟合探测与修复单频GPS周跳[J].大地测量与地球动力学,2011,31(2):94-98,106,6.基金项目
国家自然科学基金(40874015) （40874015）
