A new algorithm for the frequency offset in Doppler data

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	A new algorithm for the frequency offset in Doppler data
	Jia, PZ ; Wu, LD
	2001-04-01
发表期刊	CHINESE ASTRONOMY AND ASTROPHYSICS
ISSN	0275-1062
卷号	25 期号:2 页码:259-265
摘要	Orbit 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.
关键词	Doppler data orbit improvement frequency offset
语种	英语
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000168937400018
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/16647
专题	中国科学院数学与系统科学研究院
通讯作者	Jia, PZ
作者单位	1.Chinese Acad Sci, Inst Syst Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 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.