Blind Source Separation of Picking First Arrival Based on Second-Order Statistics
详细信息
- 责任者：Li Yong (College of Geophysics and Information Engineering ; China University of Petroleum ; Beijing 102249 ; China) ; Chen Ming
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(2)
- 关键词：地震勘探 ; seismic exploration
- 页码：p.272-274
- 图表：7 illus., 6 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Noise reduction usually is conducted before first arrivals picking, which could damage effective signals. This paper proposes an algorithm of blind source separation based on the second-order statistics. The method focuses on noise separation rather than noise removal. So there are no harms to effective signals. This idea might provide a new way for noise reduction. The algorithm of blind source separation based on the second-order statistics is applied to seismic data. The results show that the algorithm is effect, noises are separated and removed, and accurate first arrivals are picked up.