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子波相位谱消去法是通过话因式分解并以最大的方差模为准则求得子波相位港,然后将其从地震造的相位谱中消去。与常相住校正方法相比,该方法不要求于波各分频的初相位角为常数。模型实验表明,该方法具有良好的稳定性和对主频变化的适应性,首尾于波的主频相差30Hz时仍能得出很好的结果,这就使得我们对地震道可一次进行全道处理,而不必进行分段处理;对于最小相位地震道及接近最小相位的混合相位地震道,该方法具有较好的容噪能力。对于最大相位地震道及接近最大相让的混合相位地震道,当记录的信噪比较高时也有较好的效果。
Wavelet phase spectrum elimination method is through the factorization of words and the maximum variance module as a criterion to obtain the wavelet phase port, and then removed from the seismic phase spectrum created. Compared with the usual phase correction method, this method does not require that the initial phase angle of each frequency divider be constant. The model experiment shows that this method has good stability and adaptability to the change of dominant frequency, and good results can still be obtained when the dominant frequency of the wave differs from that of the first 30 Hz, which makes it possible to process all the channels at one time , Without the need for segmentation processing; for the minimum phase of the seismic traces and close to the minimum phase of the mixed-phase seismic traces, the method has better noise tolerance. For the largest phase traces and near-maximum-phase mixed-phase traces, better results are also obtained when the recorded signal-to-noise ratio is high.