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利用正交多项式拟会规则干扰同相轴的视频角和振幅的变化规律,与滤波因子随时空变化的窄阻带二维德波技术相结合,形成了一种有效剔除任意复杂规则干扰波的方法(FKSUB)。FKSUB只对地震记录上的局部区域进行处理,即在用户给定的任意形状时窗内,根据规则干扰与有数信号在视速度、频率和振幅分布三个方面的差异来剔除局部规则干扰波。FKSUB经过两年多的生产应用,效果明显,可剔除叠前、叠后创面上任意形状的各种局部规则干扰,既有利于创面的高保真和后续的特殊处理,又对最终剖面进行了修饰。
Using the rules of orthogonal polynomials to disturb the variation of the video angle and amplitude of the in-phase axis and the narrow-band two-dimensional de-wave technique with filter factors changing with time and space, a method of effectively eliminating any complicated regular interference wave is formed (FKSUB). FKSUB only deal with the local area of the seismic record, that is to say, the local regular interference wave is removed according to the difference between the regular interference and the digital signal in three aspects of the visual velocity, frequency and amplitude distribution within a given shaped window of the user. FKSUB after more than two years of production and application, the effect is obvious, can be removed before and after the stack of any shape of the local rules of the interference, not only conducive to the high fidelity of the wound and the follow-up special treatment, but also the final profile modified .