KMS National Astronomical Observatories, CAS
| 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 Publication | MEASUREMENT
 |
| ISSN | 0263-2241 |
| Volume | 175Pages:9 |
| Abstract | On 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. |
| Keyword | BDS-3 Clock performance analysis GPS III Galileo Periodic characteristics |
| DOI | 10.1016/j.measurement.2021.109075 |
| Language | 英语 |
| WOS Research Area | Engineering ; Instruments & Instrumentation |
| WOS Subject | Engineering, Multidisciplinary ; Instruments & Instrumentation |
| WOS ID | WOS:000637722600005 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/78246 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Wang, Wei |
| Affiliation | 1.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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