利用V2X增强GPS的协同车辆定位方法  

Cooperative Vehicle Positioning Method based on V2X Enhanced GPS

作　　者：王玖玲 吴韶波[1] 张媛利 邱佳慧[3] 刘琪[3] Wang Jiuling;Wu Shaobo;Zhang Yuanli;Qiu Jiahui;Liu Qi(School of Information&Communication Engineering,Beijing Information Science and Technology University,Beijing 100101,China;Communication Engineering,Xidian University,Xi'an 710071,China;Network Technology Research Institute of China United Network Communications Group Co.,Ltd.,Beijing 100048,China)

机构地区：[1]北京信息科技大学信息与通信工程学院,北京100101 [2]西安电子科技大学通信工程学院,陕西西安710071 [3]中国联通网络技术研究院,北京100048

出　　处：《系统仿真学报》2019年第12期2901-2906,共6页Journal of System Simulation

基　　金：北京市教委科技创新服务能力建设项目(77F1910960)

摘　　要：为进一步提高车辆定位精度和对定位环境的适应能力,利用车联网(V2X)通信网络进行辅助定位,以实现对GPS/DR组合定位的增强。首先GPS、DR和V2X辅助定位3个子系统独立地进行滤波估计,然后从GPS和V2X辅助定位中选择一个较好的估计结果和DR进行全局最优合成,最后以最优合成的结果反馈重置3个子滤波器。仿真结果表明,在GPS信号受多径干扰严重的时候,与单独GPS定位和GPS/DR组合定位相比,协同定位方法在性能方面分别提升了64%和36%,比常规方案有更高的定位精度和更好的环境适应能力。In order to further improve the vehicle positioning accuracy and adaptability to the environment, V2 X(vehicle to everything) communication network is used for auxiliary positioning to enhance the GPS/DR integrated positioning. Firstly, the three subsystems of GPS, DR and V2 X auxiliary positioning independently perform filtering estimation, and then a better estimation from the GPS and V2 X auxiliary positioning is selected to conduct global optimal fusion with DR, and finally the three sub-filters are reset with the feedback of the optimal result. Simulation results show that when the GPS signal is seriously affected by multipath interference, the positioning performance of the method in this paper is improved by 64% and 36%, respectively, compared with the single GPS and GPS/DR integrated positioning, which has higher accuracy and better environmental adaptability than the conventional scheme.

关 键 词：组合导航 协同定位 滤波估计 信息融合 车联网 

分 类 号：TN967.2[电子电信—信号与信息处理]