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针对地层的高频吸收衰减导致地震勘探分辨率不高 ,分析了 3种滤波器的高频补偿原理及效果 .认为高截频的低切滤波器是通过衰减低频来相对提升高频的 ,它具有较高的高频提升速率 ,可以有效地提高地震勘探的分辨率 ,但经滤波后的信号 ,缺少必要的低频成分 ,对分辨率的提高会产生不利影响 ;频谱整形滤波器的高频提升速率低 ,高频补偿严重不足 ,它对分辨率的改善不会起到明显的作用 ;频谱均衡滤波器对高频进行绝对补偿 ,且具有较高的高频提升速率 ,可以明显提高地震勘探的分辨率
According to the high frequency absorption attenuation of the strata, the resolution of seismic exploration is not high, and the principle and effect of high frequency compensation of the three kinds of filters are analyzed.It is considered that the high cutoff low cut filter relatively high frequency is attenuated by low frequency Has a higher high-frequency lifting rate, which can effectively improve the resolution of seismic exploration. However, the filtered signal lacks the necessary low-frequency components and has an adverse effect on the resolution improvement. The high-frequency improvement of the spectrum shaping filter Low rate, high-frequency compensation is seriously lacking, it will not play an obvious role in improving the resolution; spectrum equalization filter absolute compensation for high frequency, and has a high rate of high-frequency lift can significantly improve the seismic exploration Resolution