石油物探2017，Vol.56Issue(5)：667-675,683,10.DOI:10.3969/j.issn.1000-1441.2017.05.007
基于奇异值分解的角度域地震波束形成方法
Angle domain seismic beam-forming method based on singular value decomposition
摘要
Abstract
When a time-domain seismic beam-forming method based on the receiving array processes low signal-to-noise ratio (SNR) seismic records,owing to the large number of stack records,the effective beam width can not cover all the receiving arrangements,resulting in signal distortion outside the beam width.In addition,when encountering seismic records with strong coherent noise and random noise,the above method suppresses the noise unevenly,resulting in poor denoising effect.In this paper,for seismic records with strong coherent noise,random noise,and weak target signals,an angle domain seismic beam-forming method based on singular value decomposition is proposed.According to the correlation difference between the noise and the signal in seismic records,this method enhances the energy and correlation of the whole reflection signal by using an angle domain seismic beamforming method,and suppresses the coherent noise and random noise by singular value decomposition (SVD).By considering both the noise reduction and the signal enhancement,the method can effectively improve the signal-to-noise ratio of the seismic records.The tests results of simulation experiment and the measured signal showed the effectiveness of the proposed method.关键词
角度域划分/波束形成/奇异值分解/去噪/信噪比Key words
angle domain division/beam-forming/singular value decomposition/denoising/SNR分类
天文与地球科学引用本文复制引用
姜弢,邹艳艳,岳永高,徐学纯..基于奇异值分解的角度域地震波束形成方法[J].石油物探,2017,56(5):667-675,683,10.基金项目
深部探测技术与实验研究专项SinoProbe09-06 (201311197,201011083)、高等学校博士学科专项科研基金(20110061110053)联合资助.This research is financially supported by the Deep Exploration in China (SinoProbe 09-06) (Grant Nos.201311197,201011083) and the Doctoral Program of Higher Education (Grant No.20110061110053). （201311197,201011083）
