BDS与GPS群延迟的异同分析与应用Analysis and research of difference between BDS-TGD and GPS-TGD
王彬,刘经南,隋心
摘要(Abstract):
针对BDS群延迟与GPS群延迟在定义以及导航定位应用中的差异问题,该文提出了在当前各接收机生产厂家输出的BDS广播星历RINEX 2.1x格式不统一情况下,BDS广播星历群延迟信息的正确使用方法,以及在进行导航定位解算时应该注意的问题。从观测方程出发,详细阐述BDS-TGD与GPS-TGD的异同,针对当前的BDS广播星历现状,通过对比分析得出各接收机生产厂家对BDS广播星历群延迟信息的处理方式,并给出各种情况下该信息的正确使用方法。利用实测的BDS观测数据进行实验取得了良好的定位效果。该文对于BDS群延迟定义的认识及其在导航定位应用中正确使用具有一定的参考价值。
关键词(KeyWords): 北斗卫星导航系统;广播星历;群延迟;码偏差
基金项目(Foundation):
作者(Author): 王彬,刘经南,隋心
DOI: 10.16251/j.cnki.1009-2307.2015.10.029
参考文献(References):
- [1]ICD G.Global Positioning Systems Directorate System Engineering&Integration Interface Specification ISGPS-200G,in Navstar GPS Space Segment/Navigation User Interfaces[Z].Washington,DC,USA,2013.
- [2]CSNO.BeiDou Navigation Satellite System Signal in Space Interface Control Document Open Service Signal(Version 2.0)[S].China Satellite Navigation Office,2013.
- [3]戴伟,焦文海,贾小林,Compass导航卫星频间偏差参数使用方法[J].测绘科学技术学报,2009(5):367-369,374.
- [4]樊家琛,吴晓莉,李宇翔.基于三频数据的北斗卫星导航系统DCB参数精度评估方法[J].中国空间科学技术,2013(4):62-70.
- [5]吴晓莉,刘利,平劲松.Compass系统TGD与IFB分离解算方法[C]//第一届中国卫星导航学术年会,北京,2010.
- [6]IGSRWG.RINEX-The Receiver Independent Exchange Format[S].International GNSS Service(IGS),RINEX Working Group and Radio Technical Commission for Maritime Services Special Committee 104(RTCMSC104),2013.
- [7]Montenbruck O,HAUSCHILD A.Code Biases in Multi-GNSS Point Positioning[C]//Proceedings of the2013International Technical Meeting of the Institute of Navigation,San Diego,California.2013.
- [8]MATSAKIS D.The Timing Group Delay(TGD)Correction and GPS Timing Biases[C]//Proceedings of the 63rd Annual Meeting of the Institute of Navigation,Cambridge,MA,2007.
- [9]WANNINGER L,BEER S.BeiDou Satellite-induced Code Pseudorange Variations:Diagnosis and Therapy[J].GPS Solutions,2014:1-10.