全球定位系统2024，Vol.49Issue(5)：19-23,5.DOI:10.12265/j.gnss.2024103
星基增强系统码噪声和多路径误差处理方法研究
Research on code noise and multipath error processing methods of satellite-based augmented system
张键 1邵搏 1丁群 1李平力 1吴显兵1
作者信息
- 1. 中国电子科技集团公司第二十研究所,西安 710068
- 折叠
摘要
Abstract
The Satellite Based Augmentation System(SBAS)uses the pseudorange measurement corrections to enhance the integrity of navigation satellites,the code noise and multipath error processing accuracy are important factors affecting the service performance of the system and the accuracy of user positioning.In this paper,three different methods for dealing with raw pseudorange code noise and multipath error are introduced,including the single-frequency smoothing method,the code noise and multi-path correction(CNMC),and the code noise multipath method(CNMP)used by the Wide Area Augmentation System(WAAS).Through the data of the satellite-based augmentation system in operation,the influence of different code noise multipath error methods on the user's positioning accuracy is verified.The results show that CNMP can effectively eliminate the influence of code noise and multipath error in the service performance evaluation of satellite-based augmentation system,and the horizontal accuracy of 95%is increased by 0.2 m,and the vertical positioning accuracy of 95%is increased by 0.47 m.关键词
星基增强系统(SBAS)/码噪声和多路径误差/载波相位平滑/码噪声和多路径改正方法(CNMC)/码噪声多路径方法(CNMP)Key words
SBAS/code noise and multipath error/carrier phase smoothing/CNMC/CNMP分类
天文与地球科学引用本文复制引用
张键,邵搏,丁群,李平力,吴显兵..星基增强系统码噪声和多路径误差处理方法研究[J].全球定位系统,2024,49(5):19-23,5.
