| 对比地震记录信噪比的几种估算方法 |
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| 引用本文： | 牛聪,詹毅,李辉峰.对比地震记录信噪比的几种估算方法[J].物探化探计算技术,2006,28(1):5-9. |
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| 作者姓名： | 牛聪 詹毅 李辉峰 |
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| 作者单位： | 成都理工大学,信息工程学院,四川,成都,610059 |
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| 摘 要： | 估算地震记录信噪比的三种方法有SVD法、统计平均分析法和频率域估算法。利用理论模型分别对它们进行对比评价,得出当地震记录有效信号的水平相关性比较好时,三种方法都可以得到较理想的结果;但当地震记录有效信号为非水平时,三种方法均存在不同的问题。在此基础上提出了相关时移法,该方法考虑了地震记录道间有效信号的相位变化,比起其它方法来更能得出好的结果。
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| 关 键 词： | 信噪比估算 相关时移法 频率域估算法 地震记录 |
| 文章编号： | 1001-1749(2006)01-0005-05 |
| 收稿时间： | 01 25 2005 12:00AM |
| 修稿时间： | 2005年1月25日 |
The contrast of several methods for the signal/noise ratio estimation of seismic records |
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| NIU Cong,ZHAN Yi,LI Hui-feng.The contrast of several methods for the signal/noise ratio estimation of seismic records[J].Computing Techniques For Geophysical and Geochemical Exploration,2006,28(1):5-9. |
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| Authors: | NIU Cong ZHAN Yi LI Hui-feng |
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| Abstract: | This paper discusses three methods for the signal-to-noise ratio estimation of seismic records,and they are SVD method,statistical averaging method and frequency-domain estimation method,respectively.By the theoretical models, we know that if the horizontal relativity of signals in seismic records is strong,each of the methods may all be applied.Various problems can,however,appear for the application of these methods if the horizontal relativity is poor.We take a correlation time-shift method which considers the phase-shift of signal to estimate the signal-to-noise ratio and it has a better result comparing with the methods mentioned the above. |
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| Keywords: | estimation of SNR correlation time-shift method frequency-domain estimating method seismic records |
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