Signal subspace analysis for decoherent processes during interferometric   fiber-optic gyroscopes using synchronous adaptive filters

doi:10.1364/AO.53.006853

CORC > 北京大学 > 信息科学技术学院

	Signal subspace analysis for decoherent processes during interferometric fiber-optic gyroscopes using synchronous adaptive filters
	Li, Yongxiao ; Wang, Zinan ; Peng, Chao ; Li, Zhengbin
刊名	applied optics
	2014
关键词	OPTIC GYROSCOPES NOISE DEMODULATION
DOI	10.1364/AO.53.006853
英文摘要	Conventional signal processing methods for improving the random walk coefficient and the bias stability of interferometric fiber-optic gyroscopes are usually implemented in one-dimension sequence. In this paper, as a comparison, we allocated synchronous adaptive filters with the calculations of correlations of multidimensional signals in the perspective of the signal subspace. First, two synchronous independent channels are obtained through quadrature demodulation. Next, synchronous adaptive filters were carried out in order to project the original channels to the high related error channels and the approximation channels. The error channel signals were then processed by principal component analysis for suppressing coherent noises. Finally, an optimal state estimation of these error channels and approximation channels based on the Kalman gain coefficient was operated. Experimental results show that this signal processing method improved the raw measurements' variance from 0.0630 [(degrees/h)(2)] to 0.0103 [(degrees/h)(2)]. (C) 2014 Optical Society of America; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000343160200067&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Optics; SCI(E); EI; 0; ARTICLE; pengchao@pku.edu.cn; 29; 6853-6860; 53
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/291522]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Li, Yongxiao,Wang, Zinan,Peng, Chao,et al. Signal subspace analysis for decoherent processes during interferometric fiber-optic gyroscopes using synchronous adaptive filters[J]. applied optics,2014.
APA	Li, Yongxiao,Wang, Zinan,Peng, Chao,&Li, Zhengbin.(2014).Signal subspace analysis for decoherent processes during interferometric fiber-optic gyroscopes using synchronous adaptive filters.applied optics.
MLA	Li, Yongxiao,et al."Signal subspace analysis for decoherent processes during interferometric fiber-optic gyroscopes using synchronous adaptive filters".applied optics (2014).