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Spaceborne atomic clock performance review of BDS-3 MEO satellites
Wang, Wei1,2; Wang, Yupu1,3; Yu, Chao4,5; Xu, Fen2; Dou, Xiaojing1
2021-04-01
Source PublicationMEASUREMENT
ISSN0263-2241
Volume175Pages:9
AbstractOn June 23, 2020, the final satellite of the third generation Beidou satellite navigation system (BDS-3) was launched, which represents the BDS-3 is fully operational and can provide global services. Due to the fact that BDS-3 constellation mainly consists of Medium Earth Orbit (MEO) satellites, we only discussed the in-orbit atomic clock performance of MEO, and compared to that of the latest generation of GPS as well as Galileo satellites. Based on the precise satellite clock product provided by German Research Center for Geosciences (GFZ), a level of 0.2 ns fitting precision is obtained, and it is better than BDS-2. The periodic terms of satellite clock are analyzed by means of spectrum analysis. Except some mutual periodic terms, several exclusive periodic terms, approximately 8 h, 6 h and 4.8 h harmonics, are found in passive hydrogen masers (PHMs) of BDS-3, and possible reasons are given. Clock systematic characteristics, such as frequency accuracy and drift rate are examined and found that PHMs have better result than rubidium atomic clocks. Finally, frequency stability is evaluated: all BDS-3 satellite clocks can reach the order of 10 -15 at the average interval of 86400 s, which is much better than BDS-2 and comparable to the latest type of GPS III as well as Galileo satellites.
KeywordBDS-3 Clock performance analysis GPS III Galileo Periodic characteristics
DOI10.1016/j.measurement.2021.109075
Language英语
WOS Research AreaEngineering ; Instruments & Instrumentation
WOS SubjectEngineering, Multidisciplinary ; Instruments & Instrumentation
WOS IDWOS:000637722600005
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78244
Collection中国科学院国家天文台
Corresponding AuthorWang, Wei
Affiliation1.Beijing Satellite Nav Ctr, Beijing 100094, Peoples R China
2.North China Univ Technol, Beijing 100144, Peoples R China
3.Wuhan Univ, GNSS Res Ctr, Wuhan 430070, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wei,Wang, Yupu,Yu, Chao,et al. Spaceborne atomic clock performance review of BDS-3 MEO satellites[J]. MEASUREMENT,2021,175:9.
APA Wang, Wei,Wang, Yupu,Yu, Chao,Xu, Fen,&Dou, Xiaojing.(2021).Spaceborne atomic clock performance review of BDS-3 MEO satellites.MEASUREMENT,175,9.
MLA Wang, Wei,et al."Spaceborne atomic clock performance review of BDS-3 MEO satellites".MEASUREMENT 175(2021):9.
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