期刊文献+

叠前地震资料噪声衰减的小波域方法研究 被引量:94

On the denoising method of prestack seismic data in wavelet domain
在线阅读 下载PDF
导出
摘要 讨论了叠前地震记录中随机噪声的模拟方法,采用定性分析与Monte Carlo仿真相结合的方法,研究了在物理小波为基本小波的变换域该类随机噪声局部小波功率谱的统计特性,得出:其局部小波功率谱服从χ22分布.在此基础上,利用假设检验给出了在给定置信度下确定有效信号在小波变换域内能量分布空间的方法,通过在有效信号能量分布空间重建信号来压制噪声.给出了模型及实际地震资料算例,证明了本文提出的方法的有效性. The modeling of the random noise in prestack seismic data is discussed. The statistic character of the local wavelet power spectrum of the random noise is studied by qualitative analysis and Monte Carlo simulation using physical wavelet. A conclusion is drawn that the distribution of the local wavelet power spectrum of the noise is X2^2 On the basis of the conclusion, a method of determing the area of the useful signal energy distribution in wavelet domain is given and the noise is restrained by reconstruction of the signal from the area. The validity of the method is proved by calculations of a model and real seismic data.
出处 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2006年第4期1155-1163,共9页 Chinese Journal of Geophysics
基金 国家自然科学基金项目(40174032) 科学技术部重大基础研究前期研究专项 中国科学院知识创新工程重大项目(KZCX1-SW-18)联合资助
关键词 叠前地震资料 局部小波功率谱 傅里叶功率谱 随机噪声 AR模型 X2^2分布 有效信号能量分布空间 Prestack seismic data, Local wavelet power spectrum, Fourier power spectrum, Random noise,AR model, X2^2 distribution, Area of the useful signal energy distribution
作者简介 高静怀,男,1960年生,教授,博士生导师,1997年于西安交通大学获博士学位.主要从事复杂介质中地震波传播与成像及地震资料处理的理论与方法等研究.E-mail:jhgao@mail.xjtu.edu.cn
  • 相关文献

参考文献12

  • 1Zhang Rongfeng,Ulrych T J.Physical wavelet frame denoising.Geophysics,2002,68(1):225~231
  • 2Alam,A Austin J.Suppression of multiples using slant stacks.Ann.Soc.Explor.Geophys.Mtg,1981
  • 3Christopher Torrence,Gilbert P Compo.A practical Guide to wavelet analysis.Bulletin of the American Meteorological Society,1998,79(1):61~78
  • 4高静怀,满蔚仕,陈树民.广义S变换域有色噪声与信号识别方法[J].地球物理学报,2004,47(5):869-875. 被引量:66
  • 5Donoho D L.De-noising by soft-threshholding.IEEE Trans.IT,1995,41(3):613~627
  • 6Kay S M.Modem Spectral Estimation Theory and Application.Prentice-Hall,1988
  • 7吴兆熊 黄振兴 等.数字信号处理(下册)[M].西安:交通大学出版社,1985..
  • 8高静怀,郑庆庆,王大兴,潘存焕.基于物理小波的地震资料最佳分辨率解释方法[J].煤田地质与勘探,2004,32(4):50-53. 被引量:11
  • 9高静怀,汪文秉,朱光明.小波变换与信号瞬时特征分析[J].地球物理学报,1997,40(6):821-832. 被引量:132
  • 10Meyers S D,Kelly B G,JJ O'Brien.An introduction to wavelet analysis in oceanography and meteorology:with application to the dispersion of Yanai waves.Monthly Weather Review,1993,121(10):2858~2866

二级参考文献21

  • 1高静怀,汪文秉,朱光明,彭玉华,王玉贵.地震资料处理中小波函数的选取研究[J].地球物理学报,1996,39(3):392-400. 被引量:175
  • 2Gao J H, Wu R Sh and Wang B J, A new type of analyzing wavelet best matching seismic wavelets and its applications extraction of the instantaneous spectrum bandwidth, Expanded abstracts of the technical program, SEG 71th annual meeting,2001.
  • 3Larsonneur, J L., Morlet, J., Wavelets and seimic interpretation, In:Wavelets,Time-Frequency Methods and Phase Space, 1st Int. Wavelets Conf., Marseille, 126 - 141,1989.
  • 4Torrence C and Compo G P. A practical guide to wavelet analysis[J].Bulletin of the American Meteorological Socitety, 1998,79( 1 ).
  • 5СлавкинВС КопилевичЕА著 刘小琦 裘慰庭译.用地震资料制井间地质剖面法[A]..俄罗斯地球物理勘探前沿技术文集[M].北京:石油工业出版社,2000.194-199.
  • 6[1]Stockwell R G, mansinha L, lowe R P. Localization of the complex spectrum: the S transform. IEEE Trans. on Signal Processing,1996,17:998 ~ 1001
  • 7[3]C Robert Pinnegar, Lalu Mansinha. The S-transform with windows of arbitrary and varying shape.Geophysics, 2003,68( 1 ): 381 ~ 385
  • 8[5]Ta-Hsin Li, Hee-Seok Oh. Wavelet spectrum and its characterization property for random process. IEEE trans. on information theory,2002,48( 11 ): 2922 ~ 2937
  • 9[6]Lunji Qiu, Meng Hwa Er. Wavlet spectrogram of noisy signals. INT.J. Electronics, 1995,79(5) :665 ~ 677
  • 10[7]S Mallat. A Wavelet Tour of Signal Processing. New York: Academic Press, 1998

共引文献200

同被引文献1231

引证文献94

二级引证文献917

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部