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Improving the Performance of Multi-GNSS Time and Frequency Transfer Using Robust Helmert Variance Component Estimation

文献类型：期刊论文

作者Zhang, Pengfei1,2,3; Tu, Rui1,3,4; Gao, Yuping1,2; Zhang, Rui1,4; Liu, Na1,2,3
刊名SENSORS
出版日期2018-09-01
卷号18期号:9页码:13
关键词time and frequency transfer multi-GNSS robust estimation Helmert variance component
ISSN号1424-8220
DOI10.3390/s18092878
英文摘要The combination of multiple Global Navigation Satellite Systems (GNSSs) may improve the performance of time and frequency transfers by increasing the number of available satellites and improving the time dilution of precision. However, the receiver clock estimation is easily affected by the inappropriate weight of multi-GNSSs due to the different characteristics of individual GNSS signals as well as the outliers from observations. Thus, we utilised a robust Helmert variance component estimation (RVCE) approach to determine the appropriate weights of different GNSS observations, and to control for the influence of outliers in these observation in multi-GNSS time and frequency transfer. In order to validate the effectiveness of this approach, four time links were employed. Compared to traditional solutions, the mean improvement of smoothed residuals is 3.43% using the RVCE approach. With respect to the frequency stability of the time links, the RVCE solution outperforms the traditional solution, particularly in the short-term, and the mean improvement is markedly high at 14.89%.
WOS关键词COMBINING GPS ; GLONASS ; PHASE ; BEIDOU ; VIEW
资助项目National Key Research and Development Plan of China[2016YFB0501804] ; National Natural Science Foundation of China[41504006] ; National Natural Science Foundation of China[41674034] ; Chinese Academy of Sciences (CAS)[Y620YC1701] ; Chinese Academy of Sciences (CAS)[Y712YR4701] ; National Time Service Centre (NTSC)[Y824SC1S06] ; National Time Service Centre (NTSC)[QYZDB-SSW-DQC028]
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000446940600137
出版者MDPI
资助机构National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Centre (NTSC) ; National Time Service Centre (NTSC) ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Centre (NTSC) ; National Time Service Centre (NTSC) ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Centre (NTSC) ; National Time Service Centre (NTSC) ; National Key Research and Development Plan of China ; National Key Research and Development Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Time Service Centre (NTSC) ; National Time Service Centre (NTSC)
源URL[http://210.72.145.45/handle/361003/11697]  
专题中国科学院国家授时中心
通讯作者Tu, Rui
作者单位1.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Shaanxi, Peoples R China
2.Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Xian 710600, Shaanxi, Peoples R China
3.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Precis Nav Positioning & Timing Technol, Xian 710600, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Pengfei,Tu, Rui,Gao, Yuping,et al. Improving the Performance of Multi-GNSS Time and Frequency Transfer Using Robust Helmert Variance Component Estimation[J]. SENSORS,2018,18(9):13.
APA Zhang, Pengfei,Tu, Rui,Gao, Yuping,Zhang, Rui,&Liu, Na.(2018).Improving the Performance of Multi-GNSS Time and Frequency Transfer Using Robust Helmert Variance Component Estimation.SENSORS,18(9),13.
MLA Zhang, Pengfei,et al."Improving the Performance of Multi-GNSS Time and Frequency Transfer Using Robust Helmert Variance Component Estimation".SENSORS 18.9(2018):13.

入库方式： OAI收割

来源：国家授时中心

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