| 基于MPI的时频分布的改进及应用 |
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| 引用本文： | 殷文,印兴耀.基于MPI的时频分布的改进及应用[J].地球物理学进展,2005,20(1):165-169. |
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| 作者姓名： | 殷文 印兴耀 |
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| 作者单位： | 石油大学(华东)地球资源与信息学院,东营,257061;石油大学(华东)地球资源与信息学院,东营,257061 |
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| 基金项目： | CNPC物探重点实验室基金 |
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| 摘 要： | Cohen类时频分布在一定程度上克服了Wigner\|Ville分布的不足，特别是交叉项.但在平滑交叉项的同时却降低了时频聚集性，从而本文讨论了Wigner\|Ville分布的修正方法，进而可提取出不同的地震时频属性.为了提高计算效率，采用了基于MPI的并行计算及时频属性优化方法，取得了良好的效果.
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| 关 键 词： | MPI并行计算 时频分布 地震时频属性 |
| 文章编号： | 1004-2903(2005)01-0165-05 |
| 收稿时间： | 2004-7-10 |
| 修稿时间： | 2004年7月10日 |
The amelioration and application of time frequency distributions on the basis of MPI |
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| YIN Wen,YIN Xing-yao.The amelioration and application of time frequency distributions on the basis of MPI[J].Progress in Geophysics,2005,20(1):165-169. |
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| Authors: | YIN Wen YIN Xing-yao |
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| Abstract: | The Cohen's class time-frequency distributions can overcome the shortage of Wigner-Ville distribution, especially the cross-terms. However, the time-frequency concentration is reduced simultaneously. Consequently, its modified method is discussed in the paper, and so it picks up different seismic time-frequency attributes. In order to improve the computing efficiency, we adopt parallel computing on the basis of MPI and the optimized method of the time-frequency attribute, achieving good effect. |
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| Keywords: | MPI parallel computing time-frequency distribution seismic time-frequency attribute |
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