5G微基站环境下GNSS接收机性能及观测质量分析

Analysis of GNSS Receiver Performance and Observation Quality in 5G Micro Base Station Environment

我国已全面进入5G时代,为研究5G微基站电磁环境对全球卫星导航系统(GNSS)接收机工作性能及观测数据质量的影响,基于自主建设差分基准站的零基线观测数据,采用静态相对定位方法,通过观测数据质量分析、载波与伪距的双差残差序列、对比相对静态定位结果,综合评估5G微基站对GNSS接收机工作性能及观测数据质量的影响。实验表明当前环境下,GNSS差分基准站及接收机处于近距离建设的5G微基站时,载波相位观测噪声变化范围为5cm,伪距观测噪声变化范围为15cm,零基线测试结果变化范围为1mm。在实验距离内,5G微基站对于GNSS接收机工作性能及数据观测质量影响较小,可以忽略。

As China has fully entered the 5G communication era,to study the influence of the electromagnetic environment of 5G base stations on the performance of global satellite navigation system receivers and the quality of observation data,based on the zero baseline observation data of the self-built differential reference station,with the static relative positioning method,the influence of the 5G micro base station on the performance of the GNSS receiver and the quality of the observation data is comprehensively evaluated,through analysis of the observation data quality,the double-difference residual of the carrier pseudorange,and the positioning results.Experiments show that,in current condition when the GNSS differential reference station and the receiver are in a short-distance 5G micro base station environment,the carrier phase observation noise varies within 5cm,the pseudorange observation noise varies within 15cm,and the zero baseline test result varies within 1mm.Within the experimental distance,the 5G micro base station has little impact on the performance of the GNSS receiver and data observation,and can be ignored.