Unbiasedness of simultaneous independent measurement

doi:10.1088/0957-0233/23/8/085005

CORC > 北京大学 > 信息科学技术学院

	Unbiasedness of simultaneous independent measurement
	Yang, Yi ; Wang, Zinan ; Li, Zhengbin
刊名	measurement science technology
	2012
关键词	unbiasedness bias drift simultaneous independent measurement Earth&apos gyroscope GYROSCOPES s rotation velocity
DOI	10.1088/0957-0233/23/8/085005
英文摘要	We manage to get the true parameter value out of biased data without any zero calibration, a result which has not been reported to our knowledge. In order to obtain the true value of a given physical quantity out of biased noises, a general model and an algorithm based on simultaneous independent measurements are demonstrated. A decision function is constructed using variable measuring vectors. A nonlinear estimator is provided using linear combinations of differential statistics of initial observations. Repeated gyroscope experiments targeting the Earth's local rotation velocity are implemented to validate the algorithm and the estimator. Experimental results show that the true rotation velocity is obtained even if initial observations are either positively or negatively biased. Therefore, it is possible to get the true value of a physical quantity using simultaneous multi-dimensional measurements, no matter whether systematic biases exist or not. This reveals a phenomenon that physical observations, even though obscured by time-varying biases and noises, have an intrinsic true-value feature which has not been made use of in current theories and applications.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000306366600013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Multidisciplinary; Instruments & Instrumentation; SCI(E); EI; 1; ARTICLE; 8; 23
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/291826]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Yang, Yi,Wang, Zinan,Li, Zhengbin. Unbiasedness of simultaneous independent measurement[J]. measurement science technology,2012.
APA	Yang, Yi,Wang, Zinan,&Li, Zhengbin.(2012).Unbiasedness of simultaneous independent measurement.measurement science technology.
MLA	Yang, Yi,et al."Unbiasedness of simultaneous independent measurement".measurement science technology (2012).