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北斗系统机场单点服务性能评估

王剑,王莹,刘瑞华,张丰兆   

  1. taptap下载安装安卓电子信息与自动化学院,天津300300
  • 收稿日期:2017-11-20 修回日期:2018-01-09 出版日期:2018-10-25 发布日期:2018-11-19
  • 作者简介:王剑(1961—),男,江苏徐州人,教授,博士,研究方向为通信与信息系统.
  • 基金资助:
    民航安全能力建设项目(AADSA0007);国家重点研发计划项目(2016YFB0502402)

Performance evaluation of Beidou system for single point service at airport

WANG Jian, WANG Ying, LIU Ruihua, ZHANG Fengzhao   

  1. College of Electronic Information and Automation, CAUC, Tianjin 300300, China
  • Received:2017-11-20 Revised:2018-01-09 Online:2018-10-25 Published:2018-11-19

摘要: 民用航空是北斗卫星导航系统的高端用户,监测并评估北斗系统的民航机场服务性能十分必要。以3 个民航机场测试站北斗卫星导航系统星座的实测数据为基础,采用经典的服务性能分析方法,对比分析卫星的可见性、精度衰减因子(DOP)、定位精度及水平保护限值(HPL)4 项指标。结果表明:西北和华北地区两个民航机场测试站可见星数目大于7 颗,中南地区的测试站可见星数目大于6 颗,能够满足定位要求;在95%置信概率下,3 个民航机场测试站的定位精度在水平方向均优于3.522 5 m,垂直方向均优于5.424 7 m;HPL < 556 m 的比例均大于99.014 2%,满足非精密进近(NPA)飞行阶段的可用性要求。

关键词: 北斗卫星导航系统, 可见性, 精度衰减因子, 定位精度, 水平保护限值

Abstract: Civil aviation is the high-end user of BDS (BeiDou navigation satellite system), it is necessary to monitor and evaluate the BDS service performance at civil aviation airport. Based on the measured data of BDS constellation from three civil aviation airports test stations, the visibility of satellites, DOP (dilution of precision), positioning accuracy and HPL(horizontal protection level) are analyzed and compared by using the classical service performance analysis method. Results show that the number of visible satellites at two civil aviation airport test stations in Northwest and North China is greater than 7, and the number of visible satellites at the test station in Central-South China is greater than 6, which can meet the requirement in user positioning process; with the condition of 95% probability, the positioning accuracies of the three civil airport test stations are better than 3.522 5 m at horizontal direction and better than 5.424 7 m at vertical direction; the proportion of HPL values less than 556 m is greater than 99.014 2%, which meets the availability requirement of NPA (non-precision approach) flight phase.

Key words: BDS, visibility, DOP, positioning accuracy, HPL

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