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频散曲线的求取是瑞雷波勘探的基础性工作。为了能够从实测瑞雷波地震记录中准确提取出频散曲线,基于小波分析的多分辨率分析的特点,将小波变换应用到频散曲线的提取研究中。介绍了基于小波分析的频散曲线提取的计算过程和基于Matlab软件的离散数据处理方法,用实例证明了小波分析能够应用于瑞雷波频散曲线的提取,且存在提纯性能好、可靠性高、深部探测精度高等优点。针对母小波选择、计算过程集成化等问题,提出了下一步的研究方向。
The dispersion curve is the basic work of Rayleigh exploration. In order to accurately extract the dispersion curves from the measured Rayleigh wave seismograms, the wavelet transform is applied to the extraction of dispersion curves based on the characteristics of multiresolution analysis of wavelet analysis. The calculation process of dispersion curve extraction based on wavelet analysis and the discrete data processing method based on Matlab software are introduced. It is proved by examples that the wavelet analysis can be applied to the extraction of Rayleigh wave dispersion curve, and has the advantages of good purification performance and high reliability , Deep exploration of high precision. Aiming at the selection of mother wavelet and the integration of calculation process, the research direction of next step is proposed.