高分辨率P-SV波速度分析

High resolution velocity analysis of P-SV wave

本文在常规转换波速度分析算法基础上,引入两个速度检测因子,提出了两种高分辨率的转换波速度分析方法,称之为转换波协方差速度分析法和转换波ECM(Enhanced Complex Matched Filter Method)速度分析法,同时对转换点计算公式、共转换点道集选排进行了研究,选取了最佳的转换点精确解计算公式,应用到基于时窗的CCP道集分选方法中,并与高分辨率速度分析同时进行,实现了转换波的高分辨率速度分析的算法,理论模型的计算结果表明,二者在时间及速度上都具有较高的分辨率.

Based the conventional velocity analysis algorithm, this paper introduces two velocity examination factors and has realized two high resolution converted wave velocity analysis methods：the convariance measure and ECM （Enhanced Complex Matched filter）. Simultaneously, it aims at the conversion point formula and chooses the best conversion point exact solution formula. ,which is applied to CCP gather separation based on the time window . This process is going along with the high resolution velocity analysis method in order to achieve the converted wave velocity analysis arithmetic. The results on theoretical models show that the two velocity analysis methods proposed in this paper obtain a higher resolution in time and velocity.