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受原始记录远道频率低于近道频率、动校拉伸、速度误差等因素的影响 ,满覆盖叠加降低了地震剖面的分辨率。文中讨论了少道叠加方法 ,对少道叠加和满覆盖叠加的结果做了分析和对比 ,认为少道叠加既可以保护高频信息 ,又可以压制随机噪音。少道叠加技术的关键在于消除叠前道集中的随机噪音和多次波 ,提高叠前资料信噪比。少道叠加技术在实际资料处理中见到了明显的效果。
Influenced by the factors such as the far distance frequency of the original record is lower than the adjacent channel frequency, the dynamic stretching and the velocity error, overlay and overlay reduce the resolution of the seismic profile. In this paper, the method of superposition of lanes is discussed. The results of superposition and superposition are analyzed and compared. It is concluded that superposition of lanes can not only protect high-frequency information but also suppress random noise. The key to the technology of overpass is to eliminate the random noise and multiples concentrated on the prestack and improve the signal to noise ratio of the prestack data. Shaoji superimposed technology in the actual data processing to see the obvious effect.