接收机钟增强北斗三实时PPP单向授时方法
The receiver clock model enhances BDS-3 real-time PPP one-way timing
王国芳 1文刚 1王一帆 1关昕 2柯福阳2
作者信息
- 1. 云南电网有限责任公司电力科学研究院,昆明 650217
- 2. 南京信息工程大学,南京 210044
- 折叠
摘要
针对实时精密单点定位(PPP)单向授时过程中易受到短时间数据异常导致的重新收敛问题,该文根据站钟的高稳定特性,提出一种接收机钟增强北斗三(BDS-3)实时PPP单向授时方法.实验选取4个外接高性能的原子钟,连续15 d的观测数据,并接收BDS-3精密单点定位服务(PPP-B2b)播发的实时精密产品,用以分析钟模型对实时BDS-3 PPP单向授时的影响.试验结果表明,钟模型可有效避免短时间异常情况下重新收敛的问题,可提高实时BDS-3 PPP授时频率稳定度最大提高约75％,授时精度最大提高22％.
Abstract
Aiming at the problem of re-convergence caused by short data anomalies in real-time precise point positioning(PPP)one-way timing,the receiver clock offset in PPP according to the high stability characteristics of the station clock was proposed.Four stations connected to a high-precision atomic clock for 15 consecutive days were chosen and real-time precise products from BDS-3 PPP-B2b service were selected to analyze the influence of the clock model on real-time BDS-3 PPP one-way timing.The experimental results show that the clock model can effectively avoid the problem of re-convergence in the case of short-time anomalies,and can increase the real-time BDS-3 PPP timing uncertainty by up to 22％and the frequency stability by up to 75％.
关键词
接收机钟模型/BDS-3/PPP-B2b/授时/PPPKey words
receiver clock model/BDS-3/PPP-B2b/timing/PPP引用本文复制引用
基金项目
中国南方电网云南电网有限责任公司科技项目(YNKJXM20220151)
出版年
2024
NETL
NSTL
万方数据