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叠前压制相干噪音是地震资料处理技术研究中的重要课题之一。由于各种相干噪音具有不同的特性 ,所以必须采用不同的压制方法。本文提出的压制叠前相干噪音的速度变换域滤波方法 ,依据叠前地震资料中折射波以及各种形式的面波与视速度或叠加速度存在不同关系这一特征 ,有针对性地选择叠前道集的相应速度变换域进行有针对性的滤波 ,从而不仅可以对相应的噪音进行有效的压制 ,而且可以使有效信号得到较好的保护。将此法用于实际资料处理 ,效果明显。
Prestack suppression of coherent noise is one of the important topics in seismic data processing. Due to the different characteristics of various coherent noise, different pressing methods must be used. The velocity transform domain filtering method proposed in this paper suppresses prestack coherent noise based on the characteristics of refracted waves in prestack seismic data and various forms of surface waves and apparent velocities or superposition velocities. Road set corresponding speed transform domain targeted filtering, which not only can effectively suppress the corresponding noise, but also can effectively signal the effective protection. This method is used for actual data processing, the effect is obvious.