[1]王陆潇,黄智刚,赵 昀.GPS电文用户测距精度参数设计分析[J].南京理工大学学报(自然科学版),2014,38(05):620-625.
 Wang Luxiao,Huang Zhigang,Zhao Yun.Term design and analysis of user range accuracy in GPS navigation message[J].Journal of Nanjing University of Science and Technology,2014,38(05):620-625.
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GPS电文用户测距精度参数设计分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
38卷
期数:
2014年05期
页码:
620-625
栏目:
出版日期:
2014-10-29

文章信息/Info

Title:
Term design and analysis of user range accuracy in GPS navigation message
作者:
王陆潇12黄智刚1赵 昀1
1.北京航空航天大学 电子信息工程学院,北京 100191; 2.重庆邮电大学 通信与信息工程学院,重庆 400065
Author(s):
Wang Luxiao12Huang Zhigang1Zhao Yun1
1.School of Electronic and Information Engineering,Beihang University,Beijing 100191,China; 2.College of Communication and Information Engineering,Chongqing University of Posts and Communications,Congqing 400065,China
关键词:
卫星导航系统 完好性 用户测距精度 保护水平
Keywords:
sdtellite navigation system integrity user range accuracy protect level
分类号:
TN967.1
摘要:
为了研究卫星导航系统完好性参数设计对用户端完好性的影响,该文对GPS电文完好性参数中用户测距精度(URA)参数的分级方式及用户算法的变化进行了研究。采用实际国际GPS服务(IGS)广播电文数据与精密星历星钟数据进行仿真分析,证明了细化GPS用户测距精度分级方式的必要性。在此基础上,证明了采用相互独立的星历和星钟用户测距精度值能更好地描述卫星段误差。考虑传输段误差影响,利用广播星历构造卫星星座仿真分析了最坏用户位置处的测距误差,并采用加权法和最大方差法分别计算用户瞬时测距精度。对电文改进前后的两种区间划分标准和不同URA更新周期下的用户测距精度索引值进行比较分析。研究结果表明,导航电文采用5 bits将用户测距精度细化为32个区间能更好地区分不同卫星的测距误差,改善用户的完好性性能。
Abstract:
To study the impact of the integrity terms design on the user integrity performance for the satellite navigation system,the integrity parameter fractional resolutions and user algorithm of the user range accuracy(URA)parameters of the GPS message are studied here.By means of the broadcast and the precise ephemeris collected from the international GPS service(IGS),the change necessity of the URA index and the cabinet mode is proved.The independent ephemeris and clock URA index are proved to be able to describe the satellite error characteristic better.The satellite constellation is obtained from the broadcast ephemeris.The user range error at the worst user location in the service volume is simulated taking into account the propagation errors,and its index is calculated by the weighted method and the maximal variance method,and its indices are compared and contrast with different URA update intervals with and without improvements respectively.The research results demonstrate the further fractionized 5 bits URA index with 32 binning structures can discriminate the satellite errors and improve user integrity performance.

参考文献/References:

[1] Interface specification[S].IS-GPS-200,Revision D-2006.
[2]Interface control document[S].ICD-GPS-705,Revision 2-2005.
[3]Interface specification[S].IS-GPS-800,Draft-2008.
[4]Raymond DiEsposti,James DiLellio.GPS Ⅲ URA and URRA information for optimal user performance[A].Proceedings of the ION GPS 2003 Meeting[C].Portland,US:Institute of Navigation National Technical Meeting,2003:504-512.
[5]Captain Michael H R.The 2SOPS user range accuracy(URA)improvement and broadcast inter-frequency bias(TGD)updates[A].Proceedings of the ION GPS 2000 Meeting[C].Saltlake City,US:Institute of Navigation,2000:2551-2555.
[6]Su Hua,Ehret Walter.Analysis of GPS signal-in-space accuracy using GalTeC[A].Proceedings of European Navigation Conference-Global Navigation Satellite System[C].Geneva,Switzerland:S.L.,2007:235-246.
[7]Shao Bo,Liu Jiansheng,Huang Zhiguang,et al.A particle swarm optimization based algorithm for the calculation of user differential range error[J].Chinese Journal of Electronics,2012,21(1):64-68.
[8]邵博.混合星座导航系统的用户差分距离误差完好性关键技术研究[D].北京:北京航空航天大学电子信息工程学院,2012:45-98.
[9]Grace Xingxin Gao,Tang Haochen.Methodology and case studies of signal-in-space error calculation top-down meets bottom-up[A].Proceedings of the 22nd International Meeting of the Satellite Division of the Institute of Navigation[C].Georgia,US:The Satellite Division of the Institute of Navigation,2009:2825-2831.

备注/Memo

备注/Memo:
收稿日期:2013-03-24 修回日期:2013-05-14
基金项目:国家自然科学基金(60879012/F01); 国家“863”计划(2009AA12z329)
作者简介:王陆潇(1984-),女,博士,讲师,主要研究方向:卫星导航系统导航电文设计与评估,E-mail:Suellen@ee.buaa.edu.cn。
引文格式:王陆潇,黄智刚,赵昀.GPS电文用户测距精度参数设计分析[J].南京理工大学学报,2014,38(5):620-625.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2014-10-31