| 规则静态噪声的自适应去噪方法 |
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| 引用本文： | 黄璇,许彩琦,王保明.规则静态噪声的自适应去噪方法[J].中国煤炭地质,2009(1):48-51. |
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| 作者姓名： | 黄璇 许彩琦 王保明 |
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| 作者单位： | 安徽省煤田地质局物探测量队,安徽宿州234000 |
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| 摘 要： | 地震勘探测线经常要穿越工业区，不可避免地受到外界多种震源和50Hz工业电的影响，造成采集资料的大面积噪声干扰，这类干扰能量强、频带宽、且具有一定的规律性，需在叠前资料处理前有效去除。针对工业区的噪声干扰特点，提出了一种自适应零相位振幅滤波方法：即假定初至前噪声的频谱在信号区基本没有变化，据此估算出信号区噪声频谱n（w），然后计算信号频谱s（w），并将其反变换到时间域，从而达到去噪的目的。实例表明，去噪前后叠加剖面对应的频谱，其高频段弱信号能量明显得到提高。
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| 关 键 词： | 静态噪声 频谱 信噪比 自适应去噪方法 地震资料处理 |
Regular Static Noise Adaptive Denoising |
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| Huang Xuan,Xu Caiqi and Wang Baoming.Regular Static Noise Adaptive Denoising[J].Coal Geology of China,2009(1):48-51. |
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| Authors: | Huang Xuan Xu Caiqi and Wang Baoming |
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| Institution: | (Geophysical Prospecting and Surveying Team, Anhui Bureau of Coal Geological Exploration, Suzhou, Anhui 234000) |
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| Abstract: | Because of seismic prospecting lines will across industrial zones very often, thus impacts from outside multiple sources and 50Hz industrial currents are inescapable and caused acquired data have large area noise interference. These interferences have strong energy, wide wave band and certain regularity; need to be removed before prestack data processing. In allusion to industrial zone noise characters, put forward a kind of adaptive zero-phase amplitude filtering： that is assumed spectrum of noise before first arrive is basically no change in signaling zone. Hereby estimated signaling zone noise spectrum n（w）, then calculate signal spectrum s（w）, and inverse transform to time domain, thereby denoising is accomplished. Example has indicated that stacked section corresponding spectrum before and after denoising, high frequency sector weaker signal energy has been improved obviously. |
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| Keywords: | static noise spectrum S/N ratio adaptive denoising seismic data processing |
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