摘要
收集低成本接收机3种速度区间路段的动态数据,分析多系统互操作信号B1C/L1/E1和B2a/L5/E5a在不同速度区间的数据接收能力、数据质量和导航定位性能。结果表明:1)随着速度加快,互操作信号的数据接收能力逐渐变差,其中BDS-3可以保持较多的可见卫星数,平均在9颗以上;B1C/L1/E1数据完整率较优,但更容易发生数据中断。2)随着速度加快,互操作信号载噪比降低、周跳比增加,而伪距与载波相位噪声及多路径效应受速度影响较弱,其中B1C/L1/E1载波相位噪声与多路径效应值较小。3)载体速度对定位精度的影响没有明显的规律,速度与环境遮挡程度综合影响定位精度,其中多系统互操作信号组合定位较单系统定位性能提升较多;BDS-3在中低速度区间精度较高,PPP精度较其他系统高17%以上。
This paper collects dynamic data from low-cost receivers in three different speed ranges and analyzes the data reception capability,data quality,and navigation positioning performance of multi-system interoperable signals,B1C/L1/E1,and B2a/L5/E5a,within various speed intervals.The results show:1)As the speed increases,the reception capability of interoperable signals gradually deteriorates.BDS-3 can maintain visibility of more than nine satellites on average.Among the interoperable signals,B1C/L1/E1 exhibits superior data integrity but is more susceptible to data interruptions.2)As the speed increases,the carrier-to-noise ratio of interoperable signals decreases,and cycle slip ration increase.However,the pseudo-range noise,carrier phase noise,and multipath effects are less affected by speed.Notably,B1C/L1/E1 exhibits minimal carrier phase noise and multipath effects.3)The influence of carrier speed on positioning accuracy has no obvious regularity.The speed and the degree of environmental occlusion affect the positioning accuracy.The multi-system interoperability signals combination positioning has more improvement than the single system positioning performance;BDS-3 has high accuracy in the middle and low speed range,and its precision of PPP is better than other systems by more than 17%.
作者
张家同
崔先强
朱永兴
蔡昌盛
张鹏飞
甘雨
ZHANG Jiatong;CUI Xianqiang;ZHU Yongxing;CAI Changsheng;ZHANG Pengfei;GAN Yu(School of Geosciences and Info-Physics,Central South University,932 South-Lushan Road,Changsha 410083,China;State Key Laboratory of Geo-Information Engineering,1 Mid-Yanta Road,Xi’an 710054,China;Guangzhou South Marine Technology Co Ltd,39 Sicheng Road,Guangzhou 510662,China;Changsha Jinwei Information Technology Co Ltd,662 Qingshan Road,Changsha 410000,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2024年第6期577-583,共7页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(42174040)。
