首页> 外文会议>International Technical Meeting of The Institute of Navigation >GNSS Signal in Space Outliers Analysis Based on Historical Navigation Data
【24h】

GNSS Signal in Space Outliers Analysis Based on Historical Navigation Data

机译:基于历史导航数据的空间异常值分析GNSS信号

获取原文

摘要

Outlier detection and isolation is critical for aviation navigation. For GNSS, outlier occurred in SIS segment is dominant to lead positioning failure. This paper proposes a historical data based methodology for the analysis of SIS range outliers. Historical SIS outliers are collected by comparing broadcasted ephemeris with precision ephemeris provided by IGS. SIS range outliers are computed around China’s airspace. Both the spatial and temporal characteristics of outliers arecussed. Outlier duration, magnitude and influenced area are considered as the most important parameters for the outlier pool establishment. The relationship between outliers and influenced aviation phase of LPV200 is also studied, with ICAO'S required navigation performance as criteria. Ten years' GPS data is used for experiments. The results show that temporal outliers are closely related to the outlier duration, spatial outliers are mainly linked to the outlier magnitude. With year increases from 2002 to 2010, total number of ephemeris outliers decreases. What's more, ephemeris outliers have significant influence on LPV200 performance. When the magnitude of outlier is large enough, the 99.999% availability is hardly meet with by current technical framework. Our work is valuable not only for GNSS integrity performance assessment and also brings benefits to the development of enhance integrity monitor system in near future.
机译:异常检测和隔离对于航空导航至关重要。对于GNSS,SIS段发生的异常值占主导地位定位失败。本文提出了一种历史数据,用于分析SIS范围异常值。通过将广播的星历与IGS提供的精密星历进行比较来收集历史SIS异常值。 SIS系列异常值在中国的空域中计算。均突出的异常值的空间和时间特征。异常值持续时间,幅度和影响区域被认为是异常池建立的最重要参数。还研究了异常值与影响LPV200的流动阶段之间的关系,ICAO需要导航性能作为标准。十年的GPS数据用于实验。结果表明,时间异常值与异常持续时间密切相关,空间异常值主要与异常幅度相关联。随着年初从2002年到2010年增加,星历史总数的总数减少。更重要的是,星式宫异常值对LPV200性能产生重大影响。当异常值的大小足够大时,通过当前的技术框架几乎不符合99.999%的可用性。我们的作品不仅对GNSS诚信性能评估有价值,而且在不久的将来为增强诚信监测系统的发展带来了益处。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号