【摘要】 定量分析地震记录的信噪比,能更有效地进行高分辨率地震勘探,并为地层岩性和构造解释提供高分辨率、高信噪比的优质剖面。在假设噪音为随机白噪的前提下,使用相关分析法和统计平均分析法定量地估算(其中考虑了动校正和静校正不准确及界面非水平的情况)地震记录的信噪比。文章还用理论模型对这两种方法进行了验证,表明这两种方法在几种不同信噪比的条件下,其估算值与理论值比较吻合更多还原

【Abstract】 Estimating quantitatively signat to noise ratio (S/N) of seismic record is more and more important in that a high resolution seismic exploration can be conducted more efficently and a high quality seismic section with high resolution and high S/N ratio can be provided for interpreting the lithology and structure of a stratum. Under the presupposition of supposing the noise is stochastic and white, two methods to estimate the S/N ratio in quantity from the seismic date section are applied in this paper, one is the correlation method, the other is the statistical averaging method. The measure to deal with residual NMO (normal moveout) and residual status is considered. The theoretic date models are used to verify the two methods at the final in this paper.更多还原