| 摘要: |
| 载波相位观测值已越来越多地应用到增强系统中，由于观测环境影响，载波相位测量不可避免地会产生周跳，周跳的成功探测与修复是提高导航定位精度的一个重要因素。针对北斗卫星导航系统三频观测数据，分析其不同线性组合观测值的特性，选取合适的组合系数，形成一个伪距相位组合和两个无几何相位组合，采用历元间差分的方法探测和修复组合观测值的周跳，然后还原求解出原始信号的周跳，最后通过实验验证了该方法的可行性。 |
| 关键词: 北斗卫星导航系统 三频 周跳 伪距相位组合 无几何相位组合 |
| DOI： |
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| 基金项目: |
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| Cycle Slip Detection and Repair Algorithms for BeiDou Triple Frequency Data |
| XIE Lan-tian,ZHAO Le-wen,YE Shi-rong |
| (Research Center of GNSS，Wuhan University) |
| Abstract: |
| Carrier phase observations have been increasingly applied to the augmentation systems.Due to influence of the observational enviconment，carrier phase measurements will inevitably contain cycle slips.The cycle slips detection and repair is an important factor to improve the positioning accuracy.For BeiDou satellite，this paper presents a method with triple-frequency analyzing the characteristics of its different linear combination of observations,choosing the appropriate coefficient,forming a pseudo-phase combined observations and the two geometric free phase composition to detect cycle slips of the linear combination by the epoch difference and restores the original signal,and finally does experiments are carried out to validate the feasibility of this approach. |
| Key words: BeiDou satellite navigation and positioning system Triple frequency Cycle slips Pseudo-range phase combination Geometry-free phase combination |
