北斗不同双频组合SPP定位精度分析

Analysis of positioning accuracy of different dual frequency combination SPP in Beidou

北斗导航系统定位精度一直是研究的重点,利用消电离层组合模型现实北斗不同双频组合标准单点定位。结合MGEX机构发布的2个跟踪站实测数据实现北斗双频标准单点定位精度分析,经研究发现,B1/B3组合标准单点定位精度优于B1/B2组合优于B2/B3组合标准单点定位精度,X方向定位精度在0.6~2.3 m,Y分析定位精度在1.4~3 m,Z方向定位精度在3.4~6.6 m。

The positioning accuracy of Beidou navigation system had always been the focus of research.The de-energized combination model was used to achieve double-frequency combination standard single-point positioning. Combining with the measured data of two tracking stations released by MGEX, the Beidou dual-frequency standard single-point positioning accuracy analysis was realized. Research showed that the B1/B3 combination standard single-point positioning accuracy was better than the positioning accuracy of B1/B2 combination and the positioning accuracy of B2/B3 combination standard single point positioning accuracy, X-direction positioning accuracy was 0.6~2.3 m, Y analysis positioning accuracy was 1.4~3 m, Z-direction positioning accuracy was 3.4~6.6 m.