一种基于双频非差GNSS相位数据的周跳实时探测与修复方法  

A New Algorithm of Cycle Slip Real-Time Detection and Repair Based on Un-Differenced Dual-Frequency GNSS Carrier Phase Data

作　　者：杨阳阳 刘宁[1,2] 张永志 YANG Yangyang LIU Ning ZHANG Yongzhil(School of Geology Engineering and Geomatics, Chang＇an University, 126 Yanta Road, Xi＇an 710054 State Key Laboratory of Geo-Information Engineering, 1 Mid-Yanta Road, Xi＇an 710054, China)

机构地区：[1]长安大学地质工程与测绘学院,西安市雁塔路126号710054 [2]地理信息工程国家重点实验室,西安市雁塔路中段1号710054

出　　处：《大地测量与地球动力学》2017年第11期1173-1177,共5页Journal of Geodesy and Geodynamics

基　　金：中国博士后科学基金(2016M592733);地理信息工程国家重点实验室开放基金(SKLGIE2015-M-2-4);中央高校基本科研业务费专项(310826151049)~~

摘　　要：在TurboEdit方法的基础上,提出一种双频非差GNSS相位数据周跳实时探测与修复算法。在MW组合中,根据卫星高度角进行定权并结合移动窗口递推计算宽巷模糊度。在电离层残差组合的基础上进行历元间二次差分,以更好地减弱电离层残差对周跳检验量的影响。当探测出存在周跳的历元之后,采用搜索法进行修复。通过采用30s的静态数据和1s的动态数据,并在观测数据中模拟加入小周跳、大周跳对该方法分别进行测试。结果表明,该方法可正确实现周跳的实时探测与修复。We propose a new method for cycle slip real-time detection and repair using un-differenced dual-frequency GNSS carrier phase observations,based on Melbourne-Wübbena linear combination and GeometryFree combination.In M-W combination,the combination of weighted according the satellite elevation and moving window averaging is recursively used to calculate the wide-lane ambiguity.Then,the second-order time-difference phase ionospheric residual is used in phase ionospheric residual method.This reduces the influence of ionospheric variations to enable the detection of cycle slips.When the cycle slips are detected,the search method is used to repair cycle slips.The proposed method is tested using static data and dynamic data,the sampling rates are 30 seconds and 1 second recursively.Further,we add some simulated cycle slips in these data,which include big cycle slip and small cycle slip.The results indicate that this method is effective for cycle slip real-time detection and repairing.

关 键 词：周跳 MW组合 电离层残差组合 低高度角 移动窗口 

分 类 号：P228[天文地球—大地测量学与测量工程]