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| 多窗谱分析在Q值估算中的应用 | |
| 引用本文： | 王云专,王珊,董相杰,于承业.多窗谱分析在Q值估算中的应用[J].地球物理学进展,2009,24(6):2156-2162. |
| 作者姓名： | 王云专 王珊 董相杰 于承业 |
| 作者单位： | 1. 大庆石油学院,大庆,163318 2. 大庆油田有限责任公司钻探工程公司地球物理勘探一公司,大庆,163357 3. 大庆油田有限责任公司勘探开发研究院,大庆,163712 |
| 基金项目： | 黑龙江省教育厅科学技术研究项目 |
| 摘 要： | 正弦窗谱分析和Slepian窗谱分析是两种常用的多窗谱分析方法.本文利用两种窗函数分别对含噪声的衰减模型进行谱分析对比，并根据谱比法估算了Q值.研究结果表明：正弦窗函数谱分析应用的效果优于Slepian窗谱分析应用的效果，而且多正弦窗谱估计更接近真实的谱.对于深部地层，噪声的影响更加严重，利用多正弦窗谱估计估算的Q值更接近理论的Q值. |
| 关 键 词： | 多正弦窗 Slepian窗 多窗谱估计 Q值估算 谱比法 |
| 收稿时间： | 2009-3-12 |
| 修稿时间： | 2009-6-22 |
The application of the multiple tapers spectral analysis in the Q estimation |
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| WANG Yun-zhuan,WANG Shan,DONG Xiang-jie,YU Cheng-ye.The application of the multiple tapers spectral analysis in the Q estimation[J].Progress in Geophysics,2009,24(6):2156-2162. | |
| Authors: | WANG Yun-zhuan WANG Shan DONG Xiang-jie YU Cheng-ye |
| Abstract: | The multi-tapers spectral estimation, such as the multiple sinusoidal tapers and the Slepian tapers spectral estimation, is a powerful method of data analysis which is often used to study geophysical processes. In this paper, the two kinds of multi-tapers spectral estimation are compared by applying them in the composite decay traces with noise, and then the quality factor Q is estimated. It shows that the application result of the multiple sinusoidal tapers is much superior to that of the Slepian tapers. In addition, the spectrum with the multiple sinusoidal tapers spectral estimation is much closer to the real spectrum. So the much more accurate Q can be estimated by the use of the multiple sinusoidal tapers spectral estimation for the deep layer affected severely by the noise. |
| Keywords: | multiple sinusoidal tapers slepian tapers multi-tapers spectral estimation Q estimation spectral ratio method |
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