可控震源线性扫描信号仿真分析
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摘要
可控震源技术是地震勘探领域一种重要的勘探技术,扫描技术是可控震源技术的重要组成部分。本文从提高扫描信号自相关函数特性出发,对可控震源中的常用扫描技术——线性扫描信号进行了深入地分析和研究。利用matlab软件通过对自相关函数及幅度谱进行仿真分析,找出了线性扫描信号斜坡参数优化设计的方法,从而为提高勘探分辨率提供了理论依据。
Vibroseis technology is an important technology for seismic exploration.One basic part of vibroseis is sweep technique.This paper has analyzed linear sweep signal which is the most common sweep signal from improving the auto-correlation function characteristics of sweep signals.With the MATLAB software for the simulation analysis on autocorrelation function and amplitude spectrum,authors of this paper found out an approach for optimization design of the slope of the linear sweep signal parameter.This approach provides a theoretical basis for improving the resolution of seismic exploration.
Vibroseis technology is an important technology for seismic exploration.One basic part of vibroseis is sweep technique.This paper has analyzed linear sweep signal which is the most common sweep signal from improving the auto-correlation function characteristics of sweep signals.With the MATLAB software for the simulation analysis on autocorrelation function and amplitude spectrum,authors of this paper found out an approach for optimization design of the slope of the linear sweep signal parameter.This approach provides a theoretical basis for improving the resolution of seismic exploration.
引文
1林君.电磁驱动可控震源地震勘探原理及应用[M].北京:科技出版社,2004
2张宏乐,王梅生.一种改善相关子波特性的扫描信号[J].物探装备,2006,16(4):33~41
3刘益成,孙祥娥.数字信号处理[M].北京:电子工业出版社,2008
4 A J Seriff and W H Kim.The effect of harmonic distor-tion in the use of vibratory surfance sources.Geophys-ics,1970,35(2):234~246
5 Gurbuz B M.Upsweep signals with high frequency Atten-tion and their use in the construction of vibroseis synthet-ic seismogram.Geophysical Prospecting,1982,30:432~443
2张宏乐,王梅生.一种改善相关子波特性的扫描信号[J].物探装备,2006,16(4):33~41
3刘益成,孙祥娥.数字信号处理[M].北京:电子工业出版社,2008
4 A J Seriff and W H Kim.The effect of harmonic distor-tion in the use of vibratory surfance sources.Geophys-ics,1970,35(2):234~246
5 Gurbuz B M.Upsweep signals with high frequency Atten-tion and their use in the construction of vibroseis synthet-ic seismogram.Geophysical Prospecting,1982,30:432~443
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