A new algorithm for the frequency offset in Doppler data

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 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
刊名	CHINESE ASTRONOMY AND ASTROPHYSICS
	2001-04-01
卷号	25 期号:2 页码:259-265
关键词	Doppler data orbit improvement frequency offset
ISSN号	0275-1062
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000168937400018
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8180]
专题	紫金山天文台_空间目标与碎片观测研究基地
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.