智能手机BDS-3/GPS数据质量及SPP性能分析北大核心CSCD

使用可观测到BDS-3 B1I/B1C/B2a频率和GPS L1/L5频率的智能手机Xiaomi 11(青春版)作为研究对象,分别进行静态实验和不同场地的动态实验,分析手机输出的三频BDS和双频GPS原始观测数据质量及单频SPP性能。实验结果表明,智能手机的GNSS天线成本低致使其信号质量不佳,其中GPS L1频率和BDS B1C频率抗干扰性较强:BDS B1C频率定位结果在静态和动态实验中均较为稳定;GPS L1频率定位结果在动态实验中优于GPS L5频率,在静态实验中略差于GPS L5频率。

Analysis of BDS-3/GPS Data Quality and SPP Performance of Smartphone

We use the smartphone Xiaomi 11 Lite, which could track the B1I/B1C/B2a frequency of BDS-3 and the L1/L5 frequency of GPS, as the research object, and do static observation experiment and dynamic experiments with different sites respectively to analyze the quality of raw observation data of triple-frequency BDS and dual-frequency GPS output by smartphone and the performance of single-frequency SPP. The experimental results show that the low cost GNSS antenna of smartphone leads to poor signal quality, and the anti-interference of GPS L1 frequency and BDS B1C frequency of smartphone is strong. In static and dynamic experiments, the positioning result of BDS B1C frequency of smartphone is relatively stable. In static experiment, the positioning result of GPS L5 frequency is better than that of GPS L1 frequency, and in dynamic experiment, the positioning result of GPS L1 frequency is better than that of GPS L5 frequency.