北斗单频标准单点定位精度分析

Analysis of Standard Single Point Positioning Accuracy of Beidou Single Frequency

北斗二号已经可以为亚太地区提供导航与定位服务,其定位精度分析一直是目前研究的重点。本文基于3个GNSS评估机构iGMAS发布的跟踪站数据,分析了北斗二号3个频率的标准单点定位精度,发现B1频率的标准单点定位精度优于B2和B3频率,但是相差不大,定位精度可以达到1—3 m。

Beidou No.2 has been able to provide navigation and positioning services for the Asia-Pacific region.Its positioning accuracy analysis has been the focus of current research.Based on the tracking data released by three GNSS evaluation agencies iGMAS,this paper analyzes the standard single-point positioning accuracy of the three frequencies of Beidou No.2,and finds that the standard single-point positioning accuracy of B1 frequency is better than B2 frequency and B3 frequency,but the difference is not significant,positioning accuracy can reach 1—3 m.