北斗及其与GNSS组合的定位性能分析
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摘要
结合我国北斗全球卫星导航系统BDS的建设需求,对现阶段北斗区域服务系统BD2和未来BDS以及多星座GNSS组合的定位性能进行分析是十分必要的。针对BD2,通过仿真和实测数据两种方法分别对BD2,GPS/BD2和GPS/BD2/GLONASS进行了分析,分析结果表明BD2完全满足北斗公开服务性能规范中的定位性能要求,而且随着星座数的增加,定位性能逐渐增强,加入GLONASS后对高纬度区域定位性能的改善尤为明显。针对BDS,主要通过仿真的方法,对BDS和未来四大全球导航系统组合进行了分析,分析结果表明,未来BDS仍然对亚太地区的定位性能有明显的增强效果,而且未来BDS在其他地区的位置精度因子(PDOP)平均值也达到1.2~1.6,此外,未来四大导航系统组合对极区的定位性能改善较为明显。
Considering the construction demand of Beidou global navigation satellite system( BDS) in China,it is necessary to analyze the positioning performance of Beidou regional service satellite system( BD2),BDS and their combination with GPS,GLONASS and Galileo system. To BD2,the positioning performance of BD2,GPS/BD2 and GPS/BD2/GLONASS is analyzed by using two methods,simulation and factual observation data. Results show that BD2 completely meet the requirements of positioning performance in Beidou public service performance specification,and with the increase of the number of constellations,the positioning accuracy gradually improves,and the improvement of positioning performance in high-latitude regions is obvious when GLONASS is joined. To BDS,an analysis is made mainly by the method of simulation.The simulation results show that the positioning performance of the Asian-Pacific region still shows obvious improvement,and the mean value of PDOP in other regions reaches 1. 2 to 1. 6. In addition,the combination of the four major navigation systems will make obvious improvement on the positioning performance for polar regions.
Considering the construction demand of Beidou global navigation satellite system( BDS) in China,it is necessary to analyze the positioning performance of Beidou regional service satellite system( BD2),BDS and their combination with GPS,GLONASS and Galileo system. To BD2,the positioning performance of BD2,GPS/BD2 and GPS/BD2/GLONASS is analyzed by using two methods,simulation and factual observation data. Results show that BD2 completely meet the requirements of positioning performance in Beidou public service performance specification,and with the increase of the number of constellations,the positioning accuracy gradually improves,and the improvement of positioning performance in high-latitude regions is obvious when GLONASS is joined. To BDS,an analysis is made mainly by the method of simulation.The simulation results show that the positioning performance of the Asian-Pacific region still shows obvious improvement,and the mean value of PDOP in other regions reaches 1. 2 to 1. 6. In addition,the combination of the four major navigation systems will make obvious improvement on the positioning performance for polar regions.
引文
[1]谢钢.全球导航卫星系统原理——GPS、格洛纳斯和伽利略系统[M].北京:电子工业出版社,2013.
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[8]HOFMANN-WELLENHOF B,LICHTENEGGER H,WASLE E.全球卫星导航系统GPS,GLONASS,Galileo及其他系统[M].程鹏飞,蔡艳辉,文汉江,等译.北京:测绘出版社,2009.
[9]DOW J,NEILAN R,RIZOS C.The international GNSS service in a changing landscape of global navigation satellite systems[J].Journal of Geodesy,2009,83(3/4):191-198.
[10]MONTENBRUCK O,STEIGENBERGER P,KHACHIKYAN R,et al.IGS-MGEX:preparing the ground for multi-constellation GNSS science[J].Inside GNSS,2014,9(1):42-49.
[2]VIANDIER N,RABAOUI A,MARAIS J.Enhancement of Galileo and multi-constellation accuracy by modeling pseudorange noises[C]//The 9th International Conference on Intelligent Transport Systems Telecommunications(ITST),IEEE,2009:459-464.
[3]王解先,刘红新.Galileo、GPS和Galileo/GPS组合系统实用性的比较[J].大地测量与地球动力学,2005,25(1):113-117.
[4]刘帅,赵国荣,高超,等.GPS/北斗组合卫星导航系统快速选星算法[J].电光与控制,2017,24(3):32-35.
[5]VERHAGEN S.Performance analysis of GPS,Galileo and integrated GPS-Galileo[C]//Proceedings of ION GPS2002,Portland,Oregon,2002:2208-2215.
[6]曾庆化,刘建业,胡倩倩,等.北斗系统及GNSS多星座组合导航性能研究[J].全球定位系统,2011(1):53-57.
[7]杨鑫春,李征航,吴云.北斗卫星导航系统的星座及XPL性能分析[J].测绘学报,2011,40(s):68-72.
[8]HOFMANN-WELLENHOF B,LICHTENEGGER H,WASLE E.全球卫星导航系统GPS,GLONASS,Galileo及其他系统[M].程鹏飞,蔡艳辉,文汉江,等译.北京:测绘出版社,2009.
[9]DOW J,NEILAN R,RIZOS C.The international GNSS service in a changing landscape of global navigation satellite systems[J].Journal of Geodesy,2009,83(3/4):191-198.
[10]MONTENBRUCK O,STEIGENBERGER P,KHACHIKYAN R,et al.IGS-MGEX:preparing the ground for multi-constellation GNSS science[J].Inside GNSS,2014,9(1):42-49.