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用小波变换研究了地震勘探信号小波变换的过零点特性。提出了用小波变换的过零点匹配提取地震勘探信号同相轴变化信息，并利用所提取信息和多项式拟合消除随机噪声，同时增强信号高频，使信号信噪比和分辨率都得到显著提高的新方法。该方法对地震道进行小波变换，对变换结果进行过零点匹配求出地震同相轴变化信息，沿同相轴对地震道的小波变换系数进行多项式拟合得到去噪的小波变换系数，对去噪后小波变换系数进行高频增强并进行反变换便得到具有高信噪比和高分辨率的地震道。理论分析和实际处理结果表明，该方法能有效地提高地震勘探信号的信噪比和分辨率。
The wavelet transform is used to study the zero-crossing characteristics of seismic exploration signal wavelet transform. The wavelet transform zero-crossing matching is proposed to extract the information of seismic exploration signal change, and the extracted information and polynomial fitting are used to eliminate the random noise. At the same time, the high frequency of the signal is enhanced, and the signal to noise ratio and resolution of the signal are significantly improved new method. The method performs wavelet transform on the seismic traces, matches the transformation results through zero crossings to obtain seismic phase change information, and performs polynomial fitting on the wavelet transform coefficients of seismic traces along the same phase axis to obtain denoised wavelet transform coefficients. After denoising Wavelet transform coefficients for high-frequency enhancement and inverse transform to get a high signal-to-noise ratio and high resolution of the seismic traces. Theoretical analysis and practical processing results show that this method can effectively improve the signal-to-noise ratio and resolution of seismic exploration signals.