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精确的对数拉伸DMO方法
石油物探
2002年 41卷 第No. 4期
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Title
Exact logarithmic stretching DMO
单位
江汉油田物探处计算中心 湖北潜江433100
Organization
Computer Center, Geophysical Prospecting Division of Jianghan Oilfield, Qianjiang 433100, China
摘要
采用固定相位法,通过对数变换从HaleDMO的tx域解析脉冲响应的结果可以导出精确的对数拉伸DMO算法。精确的对数拉伸DMO算法具有和Hale的DMO算法一样的精度,也具有传统的对数拉伸DMO算法的计算效率。DMO脉冲响应验证与实际地震资料处理表明,该算法是一种实用的DMO方法。
Abstract
Exact logarithmic stretching DMO algorithm is derived via logarithmic transformation on Hale DMO in tx domain by using stationary phasemethod. The exact logarithmic stretching DMO algorithm has the same accuracy as Hale DMO and the same computational efficiency as conventional logarithmic stretching DMO. Verification of DMO impulse response as well as real seismic data processing show that this algorithm is a practical DMOmethod.
关键词：
对数拉伸;
DMO;
固定相位法;
炮检距;
快速傅氏变换;
Keywords:
logarithmic stretching;
DMO;
stationary phasemethod;
shot-to-geophone distance;
fast Fourier transform;
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