北斗新体制信号接收机首次定位时间测试
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摘要
北斗系统的导航信号体制发生了改变,调制方式从BPSK调整为BOC。BOC调制信号的频谱中上边带和下边带的冗余,自相关函数中的多峰等特征在接收机的信号截获、码跟踪以及数据解调等处理中带来好处。为了考察新体制信号对接收机服务性能的影响,该文对新体制信号接收机的首次定位时间的测试方法、评定方式进行了探讨,在模拟信号、新体制信号、实际信号几个方面对首次定位时间进行了比较,从接收机测试的层面对新体制信号做了初步分析。该文采用笔者所在单位自主建设完成的模拟信号自动化测试平台,完成了GNSS接收机常规检测校准工作中较难完成的首次定位时间测试项目。
The navigation signal structure of BeiDou navigation satellite system(BDS)has changed,the modulation mode was adjusted from binary phase shift keying(BPSK)to binary offset carrier(BOC).The redundancy of upper and lower bands in the spectrum and the multi-peak in autocorrelation function of BOC bring benefits in signal interception,code tracking and data demodulation.In order to investigate the effect of new signal structure on receiver service performance,in this paper,the test and evaluation method of start time to first fix of the new signal structure receiver was discussed,and the start time to first fix was compared in the aspects of analog signal,new signal structure and actual signal,and a preliminary analysis of the new signal structure was made from the level of receiver test.The automatic test platform of analog signal used in the test had completed the test items such as the start time to first fix which is difficult to complete in the routine calibration of GNSS receiver.
The navigation signal structure of BeiDou navigation satellite system(BDS)has changed,the modulation mode was adjusted from binary phase shift keying(BPSK)to binary offset carrier(BOC).The redundancy of upper and lower bands in the spectrum and the multi-peak in autocorrelation function of BOC bring benefits in signal interception,code tracking and data demodulation.In order to investigate the effect of new signal structure on receiver service performance,in this paper,the test and evaluation method of start time to first fix of the new signal structure receiver was discussed,and the start time to first fix was compared in the aspects of analog signal,new signal structure and actual signal,and a preliminary analysis of the new signal structure was made from the level of receiver test.The automatic test platform of analog signal used in the test had completed the test items such as the start time to first fix which is difficult to complete in the routine calibration of GNSS receiver.
引文
[1]吴海玲,高丽峰,汪陶胜,等.北斗卫星导航系统发展与应用[J].导航定位学报,2015,3(2):1-6.(WU Hailing,GAO Lifeng,WANG Taosheng,et al.Development and application of BeiDou navigation satellite system[J].Journal of Navigation and Positioning,2015,3(2):1-6.)
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[3]孙硕,赵越,温景仁.北斗卫星导航产品质量监测与检测必要性分析[J].产业观察,2018,2:19-20.(SUN Shuo,ZHAO Yue,WEN Jingren.BeiDou satellite navigation product’s quality monitoring and testing necessity analysis[J].Industry Observation,2018,2:19-20.)
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[6]刘婧,李海峰,朱新慧,等.RDSS接收机双向零值测试方法的探讨[J].测绘科学,2014,39(4):135-138.(LIUJing,LI Haifeng,ZHU Xinhui,et al.Research on twoway zero test method of RDSS receiver[J].Science of Surveying and Mapping,2014,39(4):135-138.)
[7]雷思磊,贺文宝,李剑青,等.基于北斗短报文的卫星通信车快速组网方案设计[J].全球定位系统,2018,43(4):53-58.(LEI Silei,HE Wenbao,LI Jianqing,et al.Design of rapid networking scheme for satellite communication vehicle based on BeiDou short message[J].GNSS World of China,2018,43(4):53-58.)
[8]徐成涛,林红磊,唐小妹,等.北斗系统新体制信号质量监测指标及测试方法[J].中南大学学报(自然科学版),2014,45(3):775-777.(XU Chengtao,LIN Honglei,TANG Xiaomei,et al.Signal quality monitoring parameters and measurement methods of BeiDou system with new signal pattern[J].Journal of Central South University(Science and Technology),2014,45(3):775-777.)
[9]章林峰,何海波,李琳,等.北斗B1C信号及导航电文的特点分析与比较[J].现代导航,2018,4(2):79-87.(ZHANG Linfeng,HE Haibo,LI Lin,et al.Characteristic analysis and comparison of BeiDou B1Csignal[J].Modern Navigation,2018,4(2):79-87.)
[10]何建新.我国高精度卫星导航定位产品的测试分析[J].电子测试,2018(Z1):92-93.(HE Jianxin.Test and analysis of high precision satellite navigation and positioning products in China[J].Electronic Test,2018(Z1):92-93.)
[11]BETZ J W.Binary offset carrier modulations for radio navigation[J].Navigation,2001,48(4):227-246.
[12]颜舒琳,丁超.一种用于BDS-3接收机工程实现的两级B1C信号捕获技术[J].全球定位系统,2019,44(1):1-9.(YAN Shulin,DING Chao.A novel engineering implementation technique for acquiring B1Csignal in the BeiDou-3receiver[J].GNSS World of China,2019,44(1):1-9.)
[13]叶剑甫.BOC体制下的弱信号捕获与跟踪方法研究[D].成都:电子科技大学,2014:10-11.(YE Jianfu.The research on weak signal acquisition and tracking techniques of binary offset carrier moduation[D].Chengdu:School of Aeronautics and Astronautics,2014:10-11.)
[14]中国卫星导航系统管理办公室.北斗/全球卫星导航系统(GNSS)测量型接收机通用规范:BD 420009-2015[S].[出版地不详]:[出版者不详],2015.(China Satellite Navigation System Management Office.General specification for BeiDou/global navigation satellite systems(GNSS)geodetic receivers:BD 420009-2015[S].[S.l.]:[s.n.],2015.)
[15]王博,李锋,焦海松,等.北斗接收机主要指标测试方法与分析[J].导航定位学报,2015,3(2):19-23.(WANGBo,LI Feng,JIAO Haisong,et al.Test method and analysis the main index of BDS receiver[J].Journal of Navigation and Positioning,2015,3(2):19-23.)
[2]国家质量监督检验检疫总局.全球定位系统(GPS)接收机(测地型和导航型)校准规范:JJF 1118-2004[S].北京:中国计量出版社,2004.(General Administration of Quality Supervision,Inspection and Quarantine of the PRC.Calibration specification for global positioning system(GPS)receiver:JJF 1118-2004[S].Beijing:China Metrology Press,2004.)
[3]孙硕,赵越,温景仁.北斗卫星导航产品质量监测与检测必要性分析[J].产业观察,2018,2:19-20.(SUN Shuo,ZHAO Yue,WEN Jingren.BeiDou satellite navigation product’s quality monitoring and testing necessity analysis[J].Industry Observation,2018,2:19-20.)
[4]李鹏,王礼亮,杨勇,等.卫星导航终端批量测试系统设计[J].导航定位学报,2016,4(2):75-80.(LI Peng,WANG Liliang,YANG Yong,et al.Design of batch-testing system for satellite navigation terminal[J].Journal of Navigation and Positioning,2016,4(2):75-80.)
[5]胡立志,董莲,陆福敏,等.基于GPS模拟器的接收机测试方法研究[J].电子测量技术,2009,32(6):127-147.(HU Lizhi,DONG Lian,LU Fumin,et al.Research on measurement method for receiver on GPSsimulator[J].Electronic Measurement Technology,2009,32(6):127-147.)
[6]刘婧,李海峰,朱新慧,等.RDSS接收机双向零值测试方法的探讨[J].测绘科学,2014,39(4):135-138.(LIUJing,LI Haifeng,ZHU Xinhui,et al.Research on twoway zero test method of RDSS receiver[J].Science of Surveying and Mapping,2014,39(4):135-138.)
[7]雷思磊,贺文宝,李剑青,等.基于北斗短报文的卫星通信车快速组网方案设计[J].全球定位系统,2018,43(4):53-58.(LEI Silei,HE Wenbao,LI Jianqing,et al.Design of rapid networking scheme for satellite communication vehicle based on BeiDou short message[J].GNSS World of China,2018,43(4):53-58.)
[8]徐成涛,林红磊,唐小妹,等.北斗系统新体制信号质量监测指标及测试方法[J].中南大学学报(自然科学版),2014,45(3):775-777.(XU Chengtao,LIN Honglei,TANG Xiaomei,et al.Signal quality monitoring parameters and measurement methods of BeiDou system with new signal pattern[J].Journal of Central South University(Science and Technology),2014,45(3):775-777.)
[9]章林峰,何海波,李琳,等.北斗B1C信号及导航电文的特点分析与比较[J].现代导航,2018,4(2):79-87.(ZHANG Linfeng,HE Haibo,LI Lin,et al.Characteristic analysis and comparison of BeiDou B1Csignal[J].Modern Navigation,2018,4(2):79-87.)
[10]何建新.我国高精度卫星导航定位产品的测试分析[J].电子测试,2018(Z1):92-93.(HE Jianxin.Test and analysis of high precision satellite navigation and positioning products in China[J].Electronic Test,2018(Z1):92-93.)
[11]BETZ J W.Binary offset carrier modulations for radio navigation[J].Navigation,2001,48(4):227-246.
[12]颜舒琳,丁超.一种用于BDS-3接收机工程实现的两级B1C信号捕获技术[J].全球定位系统,2019,44(1):1-9.(YAN Shulin,DING Chao.A novel engineering implementation technique for acquiring B1Csignal in the BeiDou-3receiver[J].GNSS World of China,2019,44(1):1-9.)
[13]叶剑甫.BOC体制下的弱信号捕获与跟踪方法研究[D].成都:电子科技大学,2014:10-11.(YE Jianfu.The research on weak signal acquisition and tracking techniques of binary offset carrier moduation[D].Chengdu:School of Aeronautics and Astronautics,2014:10-11.)
[14]中国卫星导航系统管理办公室.北斗/全球卫星导航系统(GNSS)测量型接收机通用规范:BD 420009-2015[S].[出版地不详]:[出版者不详],2015.(China Satellite Navigation System Management Office.General specification for BeiDou/global navigation satellite systems(GNSS)geodetic receivers:BD 420009-2015[S].[S.l.]:[s.n.],2015.)
[15]王博,李锋,焦海松,等.北斗接收机主要指标测试方法与分析[J].导航定位学报,2015,3(2):19-23.(WANGBo,LI Feng,JIAO Haisong,et al.Test method and analysis the main index of BDS receiver[J].Journal of Navigation and Positioning,2015,3(2):19-23.)