GPS/BDS/GLONASS多系统组合定位分析
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摘要
可见卫星数是评价导航系统定位性能的一个重要指标,也是系统可用性的基本要求。均方根差(亦称中误差)是观测精度的数据标准。本文通过实验分析了不同环境下的多系统组合的可见星数以及中误差,进而研究了多系统组合在不同环境中的可用性及定位精度。实验结果表明:在相同环境下,系统组合的可用性大幅提高,精度高于单GPS系统的精度,其中GPS/BDS/GLONASS三系统组合测量精度最高,GPS/BDS组合精度次之,GPS/GLONASS组合精度略低于GPS/BDS组合。
Visible satellite number is an important indicator of the positioning performance of the navigation system and it is also the basic requirement of system availability. And the root mean square error is the standard of the observation accuracy. Through experiments,I analyze the number of visible stars and the mean square difference of multi system in different environments. In order to study the availability of multi system combination,and the positioning accuracy. Experimental result shows that under the same environment,a substantial increase in the availability of system combination model and its precision is higher than that the precision of GPS,which GPS/BDS/GLONASS system combined measurement accuracy the highest,GPS/BDS accuracy combination times and combined GPS/GLONASS accuracy slightly lower than GPS/BDS combination of precision.
Visible satellite number is an important indicator of the positioning performance of the navigation system and it is also the basic requirement of system availability. And the root mean square error is the standard of the observation accuracy. Through experiments,I analyze the number of visible stars and the mean square difference of multi system in different environments. In order to study the availability of multi system combination,and the positioning accuracy. Experimental result shows that under the same environment,a substantial increase in the availability of system combination model and its precision is higher than that the precision of GPS,which GPS/BDS/GLONASS system combined measurement accuracy the highest,GPS/BDS accuracy combination times and combined GPS/GLONASS accuracy slightly lower than GPS/BDS combination of precision.
引文
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[6]李鹤峰,党亚民,秘金钟,等.BDS与GPS、GLONASS多模融合导航定位时空统一[J].大地测量与地球动力学,2013,33(4):73-78.
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[13]周兵,陈向东,赵齐乐.北斗系统与GPS应用比较分析[J].全球定位系统,2012(4):6-8.
[2]Cai C,Gao Y,Pan L,et al.An analysis on combined GPS/COMPASS data quality and its effect on single point positioning accuracy under different observing conditions[J].Advances in Space Research,2014,54(5):818-829.
[3]吴甜甜,张云,刘永明,等.北斗/GPS组合定位方法[J].遥感学报,2014,18(5):1 087-1 097.
[4]王世进,秘金钟,谷守周,等.BDS/GPS组合相对定位方法及精度分析[J].测绘通报,2014(5):1-4.
[5]胡自全,何秀凤.组合GNSS系统可见卫星分析[J].全球定位系统,2015(3):1-5.
[6]李鹤峰,党亚民,秘金钟,等.BDS与GPS、GLONASS多模融合导航定位时空统一[J].大地测量与地球动力学,2013,33(4):73-78.
[7]马瑞,马颖莉.多卫星系统组合导航的可用性分析[J].无线电工程,2009,39(1):32-35.
[8]许云达,赵修斌.基于卫星导航系统的组合导航技术及其发展综述[J].飞航导弹,2014(5):68-71.
[9]吴玲,孙永荣,俞晓磊,等.GPS/GLONASS/GALILEO多星座组合导航系统研究[J].中国空间科学技术,2009,29(3):23-28.
[10]李鹤峰,党亚民,秘金钟,等.BDS/GPS/GLONASS融合定位模型及性能分析[J].测绘通报,2014(9):1-5.
[11]高星伟,过静珺,程鹏飞,等.基于时空系统统一的北斗与GPS融合定位[J].测绘学报,2012(5):743-748.
[12]王式太,彭军还.现阶段北斗卫星导航系统可用性分析[J].桂林理工大学学报,2015,35(3):524-527.
[13]周兵,陈向东,赵齐乐.北斗系统与GPS应用比较分析[J].全球定位系统,2012(4):6-8.