北斗卫星导航系统单星授时精度分析
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摘要
为研究北斗卫星导航系统单星授时精度,本文基于GPS单星授时原理,结合北斗卫星多种类型星座特点,编写了BDS单星授时软件。利用i GMAS站数据进行了试验,在对原始数据进行监测并将异常信息剔除后,将授时结果与中国测绘科学研究院北斗分析中心(CGS)钟差文件进行比对,分析了BDS不同轨道卫星(GEO/IGSO/MEO)下的BDS单星授时精度。结果表明,GEO卫星的授时精度为27.39 ns,IGSO卫星的授时精度为18.37 ns,MEO卫星的授时精度为18.62 ns。
In order to study the single-star timing accuracy of the Bei Dou Navigation Satellite System,based on the GPS single-star timing principle,combined with the characteristics of the Bei Dou satellite multi-type constellation,this paper compiled the BDS singlestar timing software. Experiments were carried out using i GMAS station data. After the original data was monitored and the anomaly information was removed,the timing results were compared with the CGS clock difference file of China Academy of Surveying and Mapping,and the BDS different orbit satellites were analyzed. BDS single-star timing accuracy under GEO/IGSO/MEO). The results show that the timing accuracy of the GEO satellite is 27.39 ns,the timing accuracy of the IGSO satellite is 18.37 ns,and the timing accuracy of the MEO satellite is 18.62 ns.
In order to study the single-star timing accuracy of the Bei Dou Navigation Satellite System,based on the GPS single-star timing principle,combined with the characteristics of the Bei Dou satellite multi-type constellation,this paper compiled the BDS singlestar timing software. Experiments were carried out using i GMAS station data. After the original data was monitored and the anomaly information was removed,the timing results were compared with the CGS clock difference file of China Academy of Surveying and Mapping,and the BDS different orbit satellites were analyzed. BDS single-star timing accuracy under GEO/IGSO/MEO). The results show that the timing accuracy of the GEO satellite is 27.39 ns,the timing accuracy of the IGSO satellite is 18.37 ns,and the timing accuracy of the MEO satellite is 18.62 ns.
引文
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[2]杨帆.基于北斗监测型接收机和定制GPS时间传递接收机的单向授时精度分析[C]∥第四届中国卫星导航学术年会论文集.武汉:中国卫星导航学术年会组委会,2013.
[3]张继海.三频伪距组合在北斗单向授时中的应用[C]∥第六届中国卫星导航学术年会论文集.西安:中国卫星导航学术年会组委会,2015.
[4]李丹丹,许龙霞,李博,等.空间信号误差对北斗单向授时的影响[J].电子测量与仪器学报,2017,31(10):1673-1678.
[5]许龙霞,李孝辉,陈婧亚.一种高精度GNSS单向授时方法实现研究[J].时间频率学报,2016,39(4):290-300.
[6]何婷,陈国军,马嘉琳.精密时频传递技术综述[J].测绘通报,2018(5):1-5.
[7]李兆南,程梦飞,史丰丰.GEO卫星授时结果周期波动消减方法[J].测绘科学,2018,43(8):23-31.
[8]漆贯荣.时间科学基础[M].北京:高等教育出版社,2006.
[9]郭彬,单庆晓,肖昌炎,等.电网时钟系统的北斗/GPS双模同步技术研究[J].计算机测量与控制,2011,19(1):139-141.
[10]王天.北斗卫星导航系统授时性能评估研究[D].西安:长安大学,2014.
[11]刘朝英,屈利忠,赵齐乐. BDS广播星历的实时异常探测[C]∥第五届中国卫星导航学术年会论文集.南京:中国卫星导航学术年会组委会,2014.
[12]张继海,袁海波,董绍武.灰色模型与二次多项式模型组合的GNSS时差预测[J].时间频率学报,2014,4(7):199-205.
[13]周玉珠.实验数据中的坏值及剔除方法[J].大学物理实验,2006(2):65-67.