| 多频带消除地滚波的方法 |
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| 引用本文： | 张昌君,曲良河,吕功训,李卫忠.多频带消除地滚波的方法[J].中国石油大学学报(自然科学版),1997(5). |
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| 作者姓名： | 张昌君 曲良河 吕功训 李卫忠 |
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| 作者单位： | 石油大学石油资源科学系!山东东营，257062(张昌君，曲良河)，胜利石油管理局物探公司(吕功训，李卫忠) |
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| 摘 要： | 在叠前消除干扰波对地震记录的影响，必须充分考虑干扰波的特征地滚波频率范围低．空间分布也有自己的规律．用快速小波变换对炮集记录信号进行了频带分解，在单频带上利用KL变换联合中值滤波方法提取在时移后的窗口中表现为强能量的面波同相轴，然后合成多频带上的面波、用这种方法从原炮集记录上消除地滚波的影响，使有效波的能量得到最好的保持．所设计的方法已用于实际地震资料的处理，取得了良好的效果。
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| 关 键 词： | 瑞利波 频带 K-L变换 中值滤波 |
REMOVEMENT OF GROUND ROLL WAVE IN MUTI-FREQUENCY BANDS |
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| Zhang Changjun, Qu Lianghe, Lu Gongxun, Li Weizhong.REMOVEMENT OF GROUND ROLL WAVE IN MUTI-FREQUENCY BANDS[J].Journal of China University of Petroleum,1997(5). |
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| Authors: | Zhang Changjun Qu Lianghe Lu Gongxun Li Weizhong |
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| Institution: | Zhang Changjun; Qu Lianghe; Lu Gongxun; Li Weizhong |
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| Abstract: | The characteristics of noises differentiating from interested signal must be taken into account when the noises are removed from seismic data. Ground roll wave is a kind of coherent noises with low frequency band and finite spa-tial distribution. At first a fast wavelet operation is proposed to disolve common source gather into ffequency panel. By using KL transform and integrating median filter, the ground roll is extracted from each band in which signal is interfered by ground roll. The clean gathering wave can be obtained by means of reconstructing the surface wave and removing the ground roll from original seismic data. The effectiveness of this method is il-lustrated by real seismic data processing. |
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| Keywords: | Rayleigh wave Frequency band Median filter K-L transform |
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