改进的叠前去噪方法

本文提出了一种改进的叠前去噪方法，并将它用于消除和削弱炮记录中的多次折射、面波和声波等噪声。该方法的原理是利用改进的Ｐ－Ｚ法计算炮记录的噪声，然后从原始炮记录中减去估算出的噪声，节剩余静校正时差的影响。对实际地震记录数据的处理，结果表明该方法具有压制噪声，突出有效反射波的显著效果。

An improved technique for prestack noise elimination

An improved technique for prestack noise elimination is put forward here ; it is used to eliminate or reduce multiple refraction wave, surface wave, and acoustic wave in common-shot trace gathers. in this technique, noises of common-shot gathers are estimated by using improved P-Z method, then they are subtracted from raw common shot trace gathers, influence of residual static moveouts being considered here. Processing result of real seismic data says that this technique obviously reduces noises and highlights effective reflection waves.