基于信号质量监测的高效鲁棒的多结构GNSS接收机  

Efficient and robust multi-structure GNSS receiver based on signal quality monitoring

作　　者：贾琼琼[1] 郭琪琪 李伟鹏 陈泓锦 JIA Qiong-qiong;GUO Qi-qi;LI Wei-peng;CHEN Hong-jin(Tianjin Key Laboratory for Advanced Signal Processing,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《交通运输工程学报》2025年第1期132-144,共13页Journal of Traffic and Transportation Engineering

基　　金：国家自然科学基金项目(U2133204);中国民航大学民航航班广域监视与安全管控技术重点实验室开放基金项目(202202)。

摘　　要：为保证复杂环境下全球卫星导航系统(GNSS)导航性能的同时兼顾接收机的运行效率,充分利用传统标量跟踪环路(STL)、矢量跟踪环路(VTL)以及直接位置估计(DPE)接收机的优势,设计了一种基于信号质量监测的多结构GNSS接收机,通过实时监测卫星信号质量自适应切换接收机的工作模式;除基本的STL、VTL和DPE这3种工作模式外,进一步在STL和VTL模式中增加排除多径通道模式和窄相关技术抗多径模式,在DPE模式中增加排除多径通道模式。研究结果表明:对于仿真信号来说,卫星信号质量良好的环境下,接收机进入STL模式,水平和垂直定位误差分别为2.20和4.65 m,多径出现时切换至STL抗多径模式,对应的水平和垂直定位误差分别为3.23和18.18 m,较切换前的STL模式(误差分别为28.07和112.24 m)显著减小,当存在卫星遮挡时,接收机切换至VTL工作模式,此时水平和垂直定位误差分别为7.24和38.44 m,优于切换前的STL抗多径模式(误差分别为16.59和110.10 m),当进入弱信号环境时,接收机切换至DPE模式,对应的水平和垂直定位误差分别为3.24和17.30 m,较切换前模式(误差分别为4.47和24.89 m)进一步改善,仿真试验结果验证了多结构接收机能根据实时信号监测结果切换至最佳工作模式;对于实测数据来说,信号质量良好的情况下接收机在STL模式工作,水平和垂直定位误差分别为7.74和13.19 m,当部分卫星被遮挡时,接收机切换至VTL模式,水平和垂直定位误差分别为16.07和9.31 m,进入弱信号环境下,切换至DPE模式,对应的水平和垂直定位误差分别为6.72和48.99 m,均优于切换前的VTL模式。To ensure the navigation performance of global navigation satellite system(GNSS) in complex environment while maintaining receiver efficiency,a multi-structure GNSS receiver was designed based on signal quality monitoring.The advantages of traditional scalar tracking loop(STL),vector tracking loop(VTL),and direct position estimation(DPE) receivers were fully utilized.The receiver adapted its operating mode in real-time by monitoring satellite signal quality.In addition to the basic STL,VTL,and DPE modes,the multipath channel exclusion and the narrow correlation anti-multipath were further added to both STL and VTL modes,and the exclusion multipath technolygy mode was added to DPE mode.Research results show that for simulation signal,under good satellite signal conditions,the receiver operates in STL mode,the horizontal and vertical positioning errors are 2.20 and 4.65 m,respectively.In the presence of multipath,the receiver switches to STL anti-multipath mode,the horizontal and vertical positioning errors are 3.23 and 18.18 m,respectively,significantly less than those in previous STL mode,which errors are 28.07 and 112.24 m.Under satellite occlusion,the receiver switches to VTL mode,the horizontal and vertical positioning errors are 7.24 and 38.44 m,respectively,better than those in previous STL anti-multipath mode,which errors are 16.59 and 110.10 m.In weak signal environment,the receiver switches to DPE mode,the horizontal and vertical positioning errors are 3.24 and 17.30 m,respectively,further improved from those in the previous mode,which errors are 4.47 and 24.89 m.The simulation results confirm that the multi-structure receiver switches to the optimal operating mode according to real-time signal monitoring.Based on the measured data,the receiver operates in STL mode under good signal condition,with horizontal and vertical positioning errors of 7.74 and 13.19 m.When some satellite are occluded,the receiver switches to VTL mode,with horizontal and vertical positioning errors of 16.07 and 9.31 m.In weak signa

关 键 词：全球卫星导航系统 多结构接收机 信号质量监测 自适应切换 标量接收机 矢量接收机 直接位置估计接收机 复杂环境 

分 类 号：U121[交通运输工程]