瞬时吸收率检测与高频噪声的剔除  

Instantaneous absorptivity detection and high-frequency noise elimination

作　　者：凌云[1] 俞寿朋[1] 周熙襄[2] 

机构地区：[1]石油地球物理勘探局研究院,072750 [2]成都理工学院

出　　处：《石油地球物理勘探》1995年第6期775-787,796,共14页Oil Geophysical Prospecting

基　　金：国家自然科学基金;中国科学院资助;中国石油天然气总公司资助;大庆石油管理局联合资助

摘　　要：在高分辨率处理过程中，由于地震数据记录中存在着一类并不被人们十分注意的、但影响却十分严重的高频噪声，使得高分辨率处理结果陷入一种“混沌”状态（即一种发散和低信噪比状态）。为此，本文仔细分析和研究了这类噪声产生的物理机制和原因，并提出瞬时吸收率检测与高频噪声剔除的方法。这种去噪方法可以尽可能地保持有效信号，同时又尽量剔除这类有害的高频噪声。该方法可作为一种有效的高分辨率处理手段。The results of high-resolution data processing often fall into 'chaotic state'(divergence and low signal/noise ratio) because of the severe influence of the high-frequency noise that hasn't been fully noticed by people in high resolution data processing. Hence, we analyse in detail how this kind of noise generates. We then put forward the method for instantaneous absorptivity detection and high-frequency noise elimination. The method can preserve effective signals but suppress harmful high frequency noise as much as possible. It can be a good means for high resolution data Processing.

关 键 词：高分辨率处理 瞬时吸收率 高频噪声 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]