摘要
基于BDS-3 提供的PPP-B2b服务,对比分析B2b、E5b、B2b+E5b静态和仿动态精密单点定位精度、收敛时间,伪距观测值精度和评估ZTD精度.研究结果表明,B2b静态与动态精密单点定位精度均在厘米级,静态收敛时间在100 min以内,动态收敛时间在110 min以内,要优于E5b精密单点定位性能.B2b+E5b精密单点定位性能、伪距观测值精度、评估ZTD精度较B2b、E5b都有明显提升,其中较E5b提升效果最为明显,可为今后研究BDS-3 B2b精密单点定位提供一定参考.
Abstract
Based on the PPP-B2b service provided by BDS-3,the static and pseudo dynamic precise single point positioning accura-cy,convergence time,pseudo range observation accuracy,and evaluated ZTD accuracy of B2b,E5b,B2b+E5b are compared and an-alyzed.The research results show that the B2b static and dynamic precise single point positioning accuracy is at the centimeter level,the static convergence time is within 100 min,and the dynamic convergence time is within 110 min,which is better than the E5b pre-cise single point positioning performance.Compared with B2b and E5b,B2b+E5b precise single point positioning performance,pseu-do range observation accuracy and evaluated ZTD accuracy have significantly improved,among which the improvement effect is the most obvious compared with E5b,which can provide some reference for future research on BDS-3 B2b precise single point positio-ning.
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