基于ICEEMD的地震信号去噪  

Seismic Signal Denoising Based on ICEEMD

作　　者：杨凯[1] 

机构地区：[1]中海油田服务股份有限公司物探事业部,天津塘沽300451

出　　处：《工程地球物理学报》2017年第6期648-657,共10页Chinese Journal of Engineering Geophysics

摘　　要：ICEEMD是CEEMD的一种最新扩展,其有效解决了CEEMD在信号分解过程中产生的诸多问题,如分解模态中的残留噪声和模态混叠。基于ICEEMD提出一种新的地震信号去噪方法,含噪信号经过ICEEMD分解之后,有效信号集中在更少的模态中,通过重构信号固有的模态可以有效实现地震信号去噪。合成信号例子阐明了ICEEMD去噪方法的效果,并与传统的基于CEEMD的去噪方法进行了对比。实际数据处理结果进一步验证了文中提出方法的优势,即在有效压制随机噪声提高地震资料信噪比的同时,能够最大程度地保护有效信号。The ICEEMD overcomes some problems of the CEEMD such as the presence of residual noise and mode aliasing in decomposed modes. This paper puts forward a new seis-mic signal denoising method based on ICEEMD. The effective signal will focus on fewer modes after that the noise signal is decomposed by ICEEMD and thus seismic signal denois-ing can be effectively realized by reconstructing these signal -dominant modes. The exam-ple of synthetic signal illustrates the effect of ICEEMD and compares it with the traditional denoising method of CEEMD. The actual data further verify the advantages of the new seismic signal denoising method based on ICEEMD which the effective signal can be protec-ted to the greatest extent when the noise-signal ratio of seismic data is improved by sup-pressing the random noise effectively.

关 键 词：EMD EEMD CEEMD ICEEMD 随机噪声 

分 类 号：P631.4[天文地球—地质矿产勘探]