An improved method for real-time PPP timing and time transfer with broadcast ephemerides
文献类型：期刊论文
| 作者 | Ge,Yulong7; Cao,Xinyun1,2,6; Zhou,Feng5; Shen,Fei6; Ke,Fuyang4; Yang,Xuhai3 |
| 刊名 | Measurement Science and Technology
 |
| 出版日期 | 2022-07-27 |
| 卷号 | 33期号:10 |
| 关键词 | PPP broadcast ephemerides timing time transfer smoothing time series decomposition |
| ISSN号 | 0957-0233 |
| DOI | 10.1088/1361-6501/ac7c57 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | IOP:MST_33_10_105121 |
| 出版者 | IOP Publishing |
| 源URL | [http://210.72.145.45/handle/361003/14345]  |
| 专题 | 国家授时中心_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.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, People’s Republic of China 2.Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, People’s Republic of China 3.National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, 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.College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, 266590, People’s Republic of China 6.School of Geography, Nanjing Normal University, Nanjing 210023, People’s Republic of China 7.School of Marine Science and Engineering, Nanjing Normal University, 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). |
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来源：国家授时中心
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