【摘要】 叠前CDP道集的期望振幅谱由其叠加道振幅谱产生。采用窄带通滤波实现地震道数据滤波分频。以叠加道在叠加剖面优势频带范围内的振幅谱能量作参考标准,将其归一化,并加工成反射系数谱,这种方法可以防止低频噪声被放大。采用使期望振幅谱的高频端呈下滑的斜坡状等措施,可以防止高频噪声被放大,使叠加剖面的信噪比和分辨率同时有明显提高。更多还原

【Abstract】 The amplitude spectrum of pre-stack CDP gather is generated by its stacked trace.Seismic data can be split by narrow band-pass filter method.Through the amplitude spectrum of stacked data in dominant frequency range,we can normalize the amplitude spectrum of pre-stacked data,and change it into amplitude spectrum of reflection coefficient.This method can prevent noise amplification.We can prevent amplification of high frequency noise by declining the high frequency part of amplitude spectrum.The method can improve signal-to-noise ratio and resolution simultaneously obviously.更多还原