双频多星座北斗星基增强系统多路径误差特性研究  

Research on Multi-path Error Characteristics of DFMC BDSBAS

作　　者：戴凯阳 邵搏[1,2] 丁群 师彬[1] 张键 Dai Kaiyang;Shao Bo;Ding Qun;Shi Bin;Zhang Jian(The 20th Research Institute of CETC,Xi′an 710068,China;Shaanxi Key Laboratory of Integrated and Intelligent Navigation,Xi′an 710068,China)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068 [2]陕西省组合与智能导航重点实验室,陕西西安710068

出　　处：《天文研究与技术》2023年第6期556-563,共8页Astronomical Research & Technology

基　　金：陕西省重点研发计划(2021ZDLGY08-01,2021LLRH-06);陕西省创新能力支撑计划(2021TD-03);陕西省自然科学基础研究计划(2021JM-609)资助.

摘　　要：为了验证北斗星基增强系统(BeiDou Satellite Based Augmentation System,BDSBAS)多路径误差特性与国际民航双频多星座(Dual-Frequency Multi-Constellation,DFMC)星基增强系统多径误差模型的符合性,首先从导航系统信号特征出发,比较了北斗卫星导航系统(Beidou Navigation Satellite System,BDS)、全球定位系统(Global Positioning System,GPS)和伽利略卫星导航系统(Galileo satellite navigation system,GALILEO)频点信号特征;然后基于国际民航双频多星座北斗星基增强系统多路径误差模型的要求,提出一种双频多星座北斗星基增强系统多路径误差特性验证方法;最后,通过航空天线群延时试验以及实测数据对其符合性进行验证。结果表明:(1)BDS,GPS和GALILEO双频信号特征基本一致;(2)试验使用的航空天线符合DO-373天线群延时特性要求;(3)BDS,GPS和GALILEO多路径误差曲线变化趋势基本一致,双频多星座北斗星基增强系统多路径误差特性符合国际民航组织(International Civil Aviation Organization,ICAO)多路径模型要求。In order to verify the conformity of the multi-path error characteristics of the BeiDou Satellite Based Augmentation System with the International Civil Aviation Organization Dual-Frequency Multi-Constellation Satellite-Based Augmentation System multipath error model,this paper compares the signal characteristics of BDS,GPS and Galileo systems,and then proposes a DFMC BDSBAS multi-path error characteristic verification method based on the multi-path model requirements of ICAO DFMC SBAS.Finally,its conformity is verified by aviation antenna group delay test and measured data.The results show that:(1)Dual-frequency signal characteristics of BDS,GPS and GALILEO are basically consistent;(2)The aerial antenna used in the test meets the requirements of DO-373 antenna group delay characteristics;(3)The change trend of multi-path error curve of BDS is basically consistent with that of GPS and GALILEO.The multi-path error characteristics of DFMC BDSBAS meet the requirements of multi-path model of ICAO.

关 键 词：北斗星基增强系统 双频多星座 射频信号特征 多路径误差 天线群延时 

分 类 号：TN961[电子电信—信号与信息处理]