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	Local linear coherent noise attenuation based on local polynomial approximation
	Lu, Wenkai ; Zhang, Wenpo ; Liu, Dongqi
	2010-05-06 ; 2010-05-06
关键词	SEPARATION SIGNAL Geochemistry & Geophysics
中文摘要	We propose a new technique for the attenuation of locally coherent noise. We assume that the moveout of the noise is locally linear and approximate its amplitude variations with offset using piecewise (local) polynomial models. Thus, our method consists of three steps: detection of the noise (locally linear coherent noise, LLCN), amplitude estimation by a local polynomial approximation (LPA), and subtraction of the estimated coherent noise from the original data. Applying the proposed method to synthetic data and to a field data set shows that the LPA filter has good ability to model LLCN and is insensitive to the filter parameters. Comparisons of the results obtained by our method with those from the traditional frequency-wavenumber filter and the localized 2D filter in the Fourier projection domain (FPF) show that the new method outperforms both traditional methods in situations with complex coherent noise.
语种	英语 ; 英语
出版者	SOC EXPLORATION GEOPHYSICISTS ; TULSA ; 8801 S YALE ST, TULSA, OK 74137 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/9287]
专题	清华大学
推荐引用方式 GB/T 7714	Lu, Wenkai,Zhang, Wenpo,Liu, Dongqi. Local linear coherent noise attenuation based on local polynomial approximation[J],2010, 2010.
APA	Lu, Wenkai,Zhang, Wenpo,&Liu, Dongqi.(2010).Local linear coherent noise attenuation based on local polynomial approximation..
MLA	Lu, Wenkai,et al."Local linear coherent noise attenuation based on local polynomial approximation".(2010).

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