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从地震记录的褶积模型出发,讨论了地震记录小波变换的物理意义。经深入分析发现,恰当地选择小波函数及尺度因子a,对地震记录作小波变换,相当于对地震记录作谱白化,其特点是运算速度快,参数易于选择,可使不同目的层的信噪比与分辨率达到最佳折衷。模型及实际算例结果,证明了该方法的有效性。
Based on the convolution model of seismic record, the physical meaning of wavelet transform of seismic record is discussed. After in-depth analysis, it is found that the appropriate selection of wavelet function and scale factor a for wavelet transform of seismic records is equivalent to the spectral whitening of seismic records, which is characterized by fast calculation speed and easy parameter selection, which can make the signal noise of different target layers Ratio and resolution to achieve the best compromise. The results of the model and the actual example show that the method is effective.