摘要
分析各GNSS在系统时差参数设计上的特点和变化,并以国际权度局(BIPM)和时间频率公报发布的数据为参考对GNSS播发的系统时差进行评估分析。结果表明,BDS播发的3种系统时差均存在十几ns的偏差,通过BDS间接获得的GLONASS与GPS、Galileo与GPS的系统时差准确度优于GLONASS和Galileo系统电文发播的同种时差参数。
We analyze the characteristics and changes of system time offset parameters of each GNSS,and compare and evaluate the broadcast system time offsets according to the data published by BIPM and the time and frequency bulletin,respectively.The results show that there is a bias of more than 10 ns in the system time offsets of GPS/GLONASS/Galileo broadcasted by BDS.The accuracy of system time offsets between GLONASS and GPS,as well as Galileo and GPS,obtained indirectly through BDS,are better than that of the same parameters broadcasted by GLONASS and Galileo.
作者
许龙霞
刘娅
李孝辉
XU Longxia;LIU Ya;LI Xiaohui(National Time Service Center,CAS,3 East-Shuyuan Road,Xi’an 710600,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2024年第4期350-353,397,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(12073033)
中国科学院西部青年学者项目(XAB2020YN07)。
作者简介
第一作者:许龙霞,博士,研究员,主要从事授时监测方法与时间同步技术研究,E-mail:xulongxia@ntsc.ac.cn。
