一种历元间差分单站单频周跳探测与修复方法

发布时间：2018-06-08 01:47

本文选题：单站 + 单频　；参考：《武汉大学学报(信息科学版)》2017年10期

【摘要】：提出了一种基于历元间单差观测值的单站单频周跳探测与修复方法。通过假定前一历元为基准站,当前历元为流动站,采用相对定位处理模式获取当前历元观测值的验后单位权中误差,并基于抗差最小二乘获取每颗卫星的观测值残差,对单站单频数据进行周跳探测与修复。通过对实测数据的验证分析表明,按照本文方法可以100%探测周跳发生的历元。并且,当至少4颗卫星未发生周跳时,如发生异常卫星数小于可视卫星数的30%,则在95%以上的情况下可以有效确定异常卫星;当异常卫星过多时,本文方法确定异常卫星的成功率会有所下降。但是,对于探测出发生周跳的异常卫星,本文方法均可100%对其周跳进行修复。
[Abstract]:A single frequency cycle slip detection and repair method based on the single difference between epochs is proposed. Based on the assumption that the previous epoch is the reference station and the current epoch is the mobile station, the relative positioning processing mode is used to obtain the posteriori unit weight error of the current epoch observation value, and the residual value of each satellite is obtained based on the robust least square method. Cycle slip detection and repair for single station single frequency data are carried out. The verification and analysis of the measured data show that the epoch of cycle slip can be detected 100% according to the method in this paper. Moreover, when at least four satellites do not have a cycle jump, if the number of abnormal satellites is less than 30 percent of the number of visible satellites, the abnormal satellites can be effectively determined in more than 95 percent of the cases; when the number of abnormal satellites is excessive, The method in this paper determines that the success rate of abnormal satellites will decrease. However, the method can be used to repair 100% of the abnormal satellites which detect the cycle slip.
【作者单位】：武汉大学卫星导航定位技术研究中心;千寻位置网络有限公司;
【基金】：国家自然科学基金(41304028) 国家863计划(2014AA123101) 三峡工程鱼类资源保护重点实验室基金(SXSN/4008) 中央高校基本科研业务费专项资金(2042016kf0184,2042016kf0061)~~
【分类号】：P228

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