对伪距/相位组合量探测与修复周跳算法的改进  

Improving Method of Cycle Slip Detection and Correction Based on Combination of GPS Pseudo Range and Carrier Phase Observations

作　　者：张成军[1] 许其凤[1] 李作虎[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052

出　　处：《测绘学报》2009年第5期402-407,共6页Acta Geodaetica et Cartographica Sinica

基　　金：国防预研项目(513220405)

摘　　要：经典的伪距/相位组合法探测与修复周跳时,需要使用精密P码,这限制了其应用范围。结合电离层残差组合对其进行了改进,导出修正公式,并给出可以用来探测与修复周跳的组合量的条件,并在实验中利用L1,-1、L-3,4、L-7,9和L-14,18组合量进行了探测周跳的测试。实验表明,改进的算法在静态测量数据中,当卫星截止角大于15度时,无论是利用C/A码伪距还是交叉相关P码伪距和载波相位组合,可以检测出模拟的全部周跳;在动态测量数据中,也可以检测与修复绝大部分的周跳。In the classical method which use pseudo range and carrier phase combination to detect and repair cycle slips,the precise P-code must be used,so the application area of the classic method is limited.The method is improved by considering the ionosphere residual error combination,the improved formulas are derived and the conditions of combinations which can detect and repair cycle slips are also given.Two experiments are made to test the effect of using L1,-1、L-3,4、L-7,9 and L-14,18 combinations.Experiment results show that the improved method can detect and correct all simulated cycle slips of the static observations and almost whole cycle slips of the kinematic observations.

关 键 词：GPS 组合观测量 周跳 探测与修复 

分 类 号：P228[天文地球—大地测量学与测量工程]