An improved method for real-time PPP timing and time transfer with broadcast ephemerides

doi:10.1088/1361-6501/ac7c57

	An improved method for real-time PPP timing and time transfer with broadcast ephemerides
	Ge,Yulong 1; Cao,Xinyun 2,6,7; Zhou,Feng 3; Shen,Fei 2; Ke,Fuyang 4; Yang,Xuhai 5
	2022-07-27
发表期刊	Measurement Science and Technology
ISSN	0957-0233
卷号	33 期号:10
摘要	Abstract Due to the problem of network communication, it is difficult to ensure the reliability of real-time precise point positioning (PPP) timing/time transfer with real-time precise products. With the continued reduction in the signal-in-space range error, the performance and feasibility of GPS and Galileo PPP timing/time transfer with broadcast ephemeris were analyzed for the first time in real time. Then, we present a smoothing method and time-series decomposition method to reduce the noise and the interpolation error for GPS and Galileo PPP timing\time transfer with broadcast ephemeris in real time. The results show that GPS or Galileo PPP timing with broadcast ephemeris can achieve a 4 × 1 × 10?14 level at 15?360 s in the current state. The accuracy is about (0.46–0.81) ns and (0.44–0.61) ns for GPS and Galileo PPP time transfer. The frequency stability is at about 7.0 × 1 × 10?14 and 5.0 × 1 × 10?14 levels at 15?360 s for GPS and Galileo PPP. It is important to note that by applying our approach, the maximum improvement in frequency stability for GPS and Galileo PPP timing/time transfer is up to 99%. Furthermore, the average accuracy of GPS or Galileo PPP time transfer can achieve approximately 0.3 ns, which is an improvement of up to 67.3% compared to the traditional method.
关键词	PPP broadcast ephemerides timing time transfer smoothing time series decomposition
DOI	10.1088/1361-6501/ac7c57
语种	英语
WOS记录号	IOP:mst_33_10_105121
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14345
专题	高精度时间传递与精密测定轨研究室
通讯作者	Zhou,Feng
作者单位	1.School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, People’s Republic of China 2.School of Geography, Nanjing Normal University, Nanjing 210023, People’s Republic of China 3.College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, 266590, People’s Republic of China 4.School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, People’s Republic of China 5.National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China 6.Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, People’s Republic of China 7.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, People’s Republic of China
推荐引用方式 GB/T 7714	Ge,Yulong,Cao,Xinyun,Zhou,Feng,et al. An improved method for real-time PPP timing and time transfer with broadcast ephemerides[J]. Measurement Science and Technology,2022,33(10).
APA	Ge,Yulong,Cao,Xinyun,Zhou,Feng,Shen,Fei,Ke,Fuyang,&Yang,Xuhai.(2022).An improved method for real-time PPP timing and time transfer with broadcast ephemerides.Measurement Science and Technology,33(10).
MLA	Ge,Yulong,et al."An improved method for real-time PPP timing and time transfer with broadcast ephemerides".Measurement Science and Technology 33.10(2022).