PMO OpenIR  > 空间目标与碎片观测研究基地
A new algorithm for the frequency offset in Doppler data
Jia, PZ; Wu, LD
2001-04-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
ISSN0275-1062
Volume25Issue:2Pages:259-265
AbstractOrbit improvement with Doppler data is confronted with the systematic errors caused by the frequency offset of satellite beacon and station receiver. How to estimate the frequency offset of each topocentric passage is a key problem in evaluating the accuracy of orbit determination. The method of computing the frequency offset with the Guier navigation proposed in Ref.[1] has been proved in practice to be effective. However, calculations of the Guier navigation are rather complex, so it is difficult to use this algorithm in setting up the software for computing ephemerides by numerical integration. In this paper, a new algorithm based on the block inversion of the coefficient matrix of the: normal equation is proposed. This algorithm merely requires the inversion of a 6 x 6 or 7 x 7 matrix, and then it is quite simple to calculate the frequency offset. As shown by simulations, the accuracy of orbit determination with the new algorithm is close to the Cramer-Rao lower bound, i.e., the theoretically optimal accuracy, and it is higher by about 15% than that of the Guier navigation algorithm.
KeywordDoppler Data Orbit Improvement Frequency Offset
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000168937400018
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8180
Collection空间目标与碎片观测研究基地
Affiliation1.Chinese Acad Sci, Inst Syst Sci, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Jia, PZ,Wu, LD. A new algorithm for the frequency offset in Doppler data[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2001,25(2):259-265.
APA Jia, PZ,&Wu, LD.(2001).A new algorithm for the frequency offset in Doppler data.CHINESE ASTRONOMY AND ASTROPHYSICS,25(2),259-265.
MLA Jia, PZ,et al."A new algorithm for the frequency offset in Doppler data".CHINESE ASTRONOMY AND ASTROPHYSICS 25.2(2001):259-265.
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