干旱区生态环境知识资源中心(Arid): Desert seismic random noise reduction based on LDA effective signal detection

Arid

DOI	10.1007/s11600-019-00250-0
	Desert seismic random noise reduction based on LDA effective signal detection
	Ma, Haitao; Yan, Jie; Li, Yue; Zhang, Chao; Lin, Hongbo
通讯作者	Li, Yue
来源期刊	ACTA GEOPHYSICA
ISSN	1895-6572
EISSN	1895-7455
出版年	2019
卷号	67 期号:1 页码:109-121
英文摘要	At present, the seismic exploration of mineral resources such as unknown oil fields and natural gas fields has become the focus and difficulty. The Tarim Oilfield located in the desert area of northwest China has many uncertainties due to complicated geological structure and resource burial conditions. And the seismic record collected carries various noises, especially random noise with complex features, including non-stationary, non-Gaussian, nonlinear and low frequency. The seismic events are contaminated by random noise. Also the effective signal of desert seismic record is in the same frequency band as the random noise. These situations have brought great difficulties in denoising by conventional methods. In this paper, a noise reduction framework based on linear discriminant analysis effective signal detection in desert seismic record is proposed to solve this problem. At first, the method utilizes the difference between the effective signals and the noise in the low-dimensional space. The seismic data are divided into the effective signal cluster and the noise cluster. Then, the effective signal is extracted to realize the position of the seismic events. Finally, the conventional filter is matched to obtain better denoising results. The framework is applied to synthetic desert seismic records and real desert seismic records. The experimental results show that denoising capability after detecting effective signals is obviously better than those of conventional denoising methods. The accuracy of the seismic effective signal detection is higher, and the seismic events' continuity is maintained better.
英文关键词	Linear discriminant analysis The seismic effective signal detection Random noise reduction Desert seismic record
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000459978000007
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213840
作者单位	Jilin Univ, Dept Informat, Coll Commun Engn, Changchun 130012, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Ma, Haitao,Yan, Jie,Li, Yue,et al. Desert seismic random noise reduction based on LDA effective signal detection[J],2019,67(1):109-121.
APA	Ma, Haitao,Yan, Jie,Li, Yue,Zhang, Chao,&Lin, Hongbo.(2019).Desert seismic random noise reduction based on LDA effective signal detection.ACTA GEOPHYSICA,67(1),109-121.
MLA	Ma, Haitao,et al."Desert seismic random noise reduction based on LDA effective signal detection".ACTA GEOPHYSICA 67.1(2019):109-121.