| 时间域单频干扰波的识别与压制 |
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| 引用本文： | 段云卿,徐小红,高兴友.时间域单频干扰波的识别与压制[J].物探与化探,2006,30(3):266-269,275. |
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| 作者姓名： | 段云卿 徐小红 高兴友 |
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| 作者单位： | 中国地质大学,地下信息探测技术与仪器教育部重点实验室,北京,100083 |
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| 摘 要： | 在野外地震数据采集过程中,地震测线上方如果有高压输电线通过,在地震记录中就存在一个50 Hz左右的强单频干扰波。在时间域内利用正弦波逼近强单频干扰波,并从地震记录中减去它,以实现压制这种干扰波的目的。理论记录试算和实际资料处理结果表明,即使是对于常规滤波方法难以消除的极强的单频干扰,该方法仍然获得了较好的效果。本方法的最大优点是仅对单频干扰波进行有效的压制,对有效波的损失很小。
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| 关 键 词： | 地震勘探 单频干扰 时间域 滤波方法 |
| 文章编号： | 1000-8918（2006）03-0266-04 |
| 收稿时间： | 2006-02-20 |
| 修稿时间： | 2006-02-20 |
THE RECOGNITION AND SUPPRESSION OF SINGLE FREQUENCY INTERFERENCE WAVE IN TIME DOMAIN |
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| DUAN Yun-qing,XU Xiao-hong,GAO Xing-you.THE RECOGNITION AND SUPPRESSION OF SINGLE FREQUENCY INTERFERENCE WAVE IN TIME DOMAIN[J].Geophysical and Geochemical Exploration,2006,30(3):266-269,275. |
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| Authors: | DUAN Yun-qing XU Xiao-hong GAO Xing-you |
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| Institution: | Geo-detection Laboratory, Ministry of Education, China University of Geoscience, Beijing 100083, China |
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| Abstract: | There is a strong single frequency interference wave around 50 Hz in seismic records when a high-tension line crosses over a seismic line in the process of field seismic data acquisition. The authors studied the interference wave using sine wave in time domain and subtracted it from seismic records for the purpose of suppressing the interference wave. Theoretical and real data results prove the feasibility of the method in suppression of strong single frequency which is unlikely to be suppressed by conventional filtering methods. The most major advantage of the method lies in the fact that only the interference wave with single frequency can he suppressed, and the loss of useful signal is very limited. |
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| Keywords: | seismic exploration single frequency time domain filtering methods |
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