近地表的地形起伏变化和岩性变化可能引发近地表的散射波 ,这种次生干扰波在时距关系、频率特性等方面都与反射波和绕射波相似 ,在记录上的识别和压制有一定的困难。利用散射波的波动特性 ,在叠后通过波场延拓使其聚焦成像 ,然后通过压制强噪声的手段将其衰减 ,是我们对这种噪声研究的一种新的探索。 Near-surface relief and lithology changes in the topography may lead to scattered near the surface of the wave, the secondary interference wave in the time-distance relationship, frequency characteristics and other aspects of the reflected wave and diffraction similar to the record in the identification and suppression There are certain difficulties. Using the fluctuation characteristics of the scattered wave, it can focus the image by the wavefield extension after the stack and then attenuate it by suppressing the strong noise. This is a new exploration of this kind of noise research.