北斗三频消电离层组合周跳探测方法研究  

Study of cycle-slip detection by using BDS triple-frequency and ionosphere-free combinations

作　　者：庄文泉 王利[2] 范丽红[2] 李毓照 ZHUANG Wenquan;WANG Li;FAN Lihong;LI Yuzhao(Second Crust Monitoring and Application Center, CEA, Xi＇ an 710054, China;School of Geology Engineering and Geomatics, Chang＇an University, Xi＇an 710054, China;The First Geodetic Surveying Brigade, NASG, Xi＇an 710054, China)

机构地区：[1]中国地震局第二监测中心,西安710054 [2]长安大学地质工程与测绘学院,西安710054 [3]国家测绘地理信息局第一大地测量队,西安710054

出　　处：《测绘科学》2018年第5期121-126,137,共7页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41372345);中国地震局地震行业科研专项(201508009);中央高校基金项目(310826172006)

摘　　要：为了实现在电离层活跃期对北斗三频观测值的周跳探测,在分析北斗三频观测值特性的基础上,推导并提出一种无几何无电离层组合周跳探测新方法,针对该方法存在不敏感周跳的问题,结合二次历元间差分的无几何相位组合法,对北斗三频观测数据进行周跳探测。并利用电离层高度活跃时期的观测数据对该方法进行验证,实验结果表明,该方法可以在强电离层影响下探测0~4周的小周跳,可考虑将其应用到北斗三频实时导航定位的周跳处理中。In order to detect the cycle-slip in BDS triple-frequency observations during the ionosphere active period,a new method combined by geometry-free and ionosphere-free is put forward based on analyzing the characteristics BDS triple-frequency observations.On account of the disadvantages of this method,the second order epoch difference of geometry-free phase combination is also used to detect cycle-slips in BDS triple-frequency observations.And this method is validated by the triple-frequency data during ionosphere highly active period.The result indicates that this method can detect the cycle slips of 0~4 cycles during high ionospheric activity.So this method can be considered to apply to BDS triple-frequency cycle slip processing in real-time navigation and positioning.

关 键 词：三频数据 周跳探测 无几何无电离层组合 无几何相位组合 

分 类 号：P228[天文地球—大地测量学与测量工程]