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三阶累积量在可控震源地震时间剖面中压制旁瓣的应用 被引量:3

THE APPLICATION OF THREE\|ORDER CUMULANT ON DEPRESSING THE SIDE\|LOBE IN VIBROSEIS DATA TIME\|SECTION
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摘要 可控震源浅层地震勘探受环境噪声干扰很大 ,对其接收信号进行预处理时要求分辨率很高。传统的相关运算在很多时候不能满足要求 ,运算结果中旁瓣偏高 ,形成假层。由于高阶累积量具有屏蔽高斯噪声的优点 ,论文以三阶累积量为数学工具进行可控震源地震信号的预处理 ,仿真实验证明该方法能很好地压制噪声 ,降低时间剖面中的旁瓣 ,提高分辨率 ,消除时间剖面中的假层。 Shallow\|layer seismic survey using controlled vibrator is greatly disturbed by environment noise, so high resolution is needed in seismic data pretreatment. Because the traditional correlation leads to high side\|lobes in results, meanwhile high\|order cumulant has the virtue of eliminating Gauss noise, three\|order cumulant is used for pretreatment of controlled vibrator exploration data. Simulation result proves that this method can eliminate the influence of noise, depress the height of side\|lobes,eliminate the false layers in the time\|section, and improve the resolution.
出处 《地学前缘》 EI CAS CSCD 2003年第1期151-154,共4页 Earth Science Frontiers
基金 国家自然科学基金项目 ( 4 96742 3 2 )
关键词 可控震源 浅层地震勘探 环境噪声 反射信号 时间延迟 depressing side\|lobe correlation three\|order cumulant Chirp signal controlled vibrator
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参考文献8

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