| 沿层中值滤波在消除深拖浅地层剖面电干扰中的应用 |
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| 引用本文： | 蒋锦朋,罗进华,杨修伟,朱培民. 沿层中值滤波在消除深拖浅地层剖面电干扰中的应用[J]. 工程地球物理学报, 2014, 0(4): 441-445 |
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| 作者姓名： | 蒋锦朋 罗进华 杨修伟 朱培民 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院;中海油田服务股份有限公司; |
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| 基金项目： | 中海油服科研项目(编号:WTB13YF019)资助 |
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| 摘 要： | 声学定位系统的充电会在深拖搭载的浅地层剖面上造成竖条形噪声,严重影响海底地层资料的处理与解释。本文分析了上述电噪声信号特征,采用了中值滤波方法,对其进行了处理。文中设计了水平和沿层位两种不同窗口进行滤波,并改变窗口长度进行了滤波效果比较。实验结果表明,沿层位窗口可以更好地消除噪声并实现信号保真。
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| 关 键 词： | 通讯噪声 中值滤波 水平窗口 沿层位窗口 深拖浅地层剖面 |
The Application of Layer-based Median Filtering Method to Eliminate Electrical Noise in Deep-Tow Shallow Stratigraphic Profile |
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| Affiliation: | Jiang Jinpeng;Luo Jinhua;Yang Xiuwei;Zhu Peimin; (1. Institute of Geophysics and Geomatics , China University of Geosciences , Wuhan Hubei 430074, China 2. China National Oh fshore Oil Corporation, Tianjin 300451, China) |
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| Abstract: | The charging of the acoustic position system can cause vertical bar-shaped noise in shallow stratigraphic profile of Deep-Tow detection,seriously affecting the seabed strata data processing and interpretation.This paper analyzed the noise＇s characteristics and dealt with the data by median filtering.The horizontal and layer-based filtering window to filter the noise is designed,and the window length to compare the filter effect is adjusted.Experimental results show that layer-based filter window can eliminate noise and protect the useful signal better. |
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| Keywords: | communication noise median filtering horizontal window layer-based win-dow deep tow shallow stratigraphic section |
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