NAOC Open IR
A digital open-loop Doppler processing prototype for deep-space navigation
Jian NianChuan1; Shang Kun1; Zhang SuJun1; Wang MingYuan1; Shi Xian1; Ping JingSong1; Yan JianGuo3; Tang GeShi4; Liu JunZe4; Qiu Shi1; Fung LaiWo1; Zhang Hua5; Wang Zhen5; Gou Wei1
2009
Source PublicationSCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
ISSN1672-1799
Volume52Issue:12Pages:1849
AbstractA prototype based on digital radio technology with associated open-loop Doppler signal processing techniques has been developed to measure a spacecraft's line-of-sight velocity. The prototype was tested in China's Chang'E-1 lunar mission relying on S-band telemetry signals transmitted by the satellite, with results showing that the residuals had a RMS value of similar to 3 mm/s (1 sigma) using 1-sec integration, which is consistent with the Chinese conventional USB (Unified S-Band) tracking system. Such precision is mainly limited by the short-term stability of the atomic (e.g. rubidium) clock at the uplink ground station. It can also be improved with proper calibration to remove some effects of the transmission media (such as solar plasma, troposphere and ionosphere), and a longer integration time (e.g. down to 0.56 mm/s at 34 seconds) allowed by the spacecraft dynamics. The tracking accuracy can also be increased with differential methods that may effectively remove most of the long-term drifts and some of the short-term uncertainties of the uplink atomic clock, thereby further reducing the residuals to the 1 mmls level. Our experimental tracking data have been used in orbit determination for Chang'E-1, while other applications (such as the upcoming YH-1 Mars orbiter) based on open-loop Doppler tracking will be initiated in the future. Successful application of the prototype to the Chang'E-1 mission in 2008 is believed to have great significance for China's future deep space exploration.
Keywordopen-loop Doppler differential Doppler deep space navigation Chang'E-1
Language英语
Funding Project[Research Plan of CAS] ; [National Natural Science Foundation of China] ; [CAS] ; [Beijing Aerospace Command and Control Center]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/62511
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院
3.武汉大学
4.Beijing Aerosp Command & Control Ctr, Beijing 100094, Peoples R China
5.中国科学院新疆天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jian NianChuan,Shang Kun,Zhang SuJun,et al. A digital open-loop Doppler processing prototype for deep-space navigation[J]. SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,2009,52(12):1849.
APA Jian NianChuan.,Shang Kun.,Zhang SuJun.,Wang MingYuan.,Shi Xian.,...&Gou Wei.(2009).A digital open-loop Doppler processing prototype for deep-space navigation.SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,52(12),1849.
MLA Jian NianChuan,et al."A digital open-loop Doppler processing prototype for deep-space navigation".SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY 52.12(2009):1849.
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