| GNSS实时周跳修复算法与精密单点定位测试分析 |
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| 引用本文： | 尹翔飞,刘根友,王彬彬,吕栋.GNSS实时周跳修复算法与精密单点定位测试分析[J].全球定位系统,2022,47(6):25-30. |
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| 作者姓名： | 尹翔飞 刘根友 王彬彬 吕栋 |
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| 作者单位： | 1.中国科学院精密测量科学与技术创新研究院 大地测量与地球动力学国家重点实验室, 武汉 430077 |
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| 摘 要： | 全球卫星导航系统(GNSS)能够为用户提供定位、导航和授时(PNT)服务，被广泛应用于国防安全保障和国民经济建设中. 实时精密单点定位(RT-PPP)是一种高精度卫星导航定位方法，针对信号中断导致的重新初始化时间长的问题，提出一种基于历元间差分伪距和载波相位观测量的周跳修复算法，设计了一种RT-PPP算法，并介绍其实现流程. 采用国际GNSS服务(IGS)观测站数据进行周跳修复实验，成功率在99%以上，缩短了重新收敛时间. 在楼顶进行推车实验，RT-PPP在水平方向定位精度优于1 cm，高程定位方向精度为2~3 cm.
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| 关 键 词： | 全球卫星导航系统(GNSS) 周跳修复 实时精密单点定位(RT-PPP) 定位实验 精度评定 |
| 收稿时间： | 2022-08-23 |
GNSS real-time cycle slip repair algorithm and PPP test analysis |
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| Affiliation: | 1.State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430077, China2.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China3.The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China |
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| Abstract: | Global Navigation Satellite System (GNSS) can provide users with positioning, navigation and timing services, and is widely used in national defense security and national economic construction. Real time precise point positioning (PPP) is a high precise satellite navigation positioning method, this paper discusses the current problems of the algorithm that long reinitialization time caused by signal interruption , and proposes a cycle slip repair algorithm based on the differential pseudorange and carrier phase observations. It designs a real-time precise point positioning algorithm and introduces its implementation process. The success rate of the cycle slip repair experiment using the data of the IGS observatory is more than 99%, and shorten the reconvergence time. The cart experiment was carrier out on the roof of the building, and the real-time precise point positioning accuracy was better than 1 cm in the horizontal direction, and the accuracy was 2~3 cm in the vertical direction. |
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