| 离散Gabor变换在电网瞬态信号滤波中的应用 |
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| 引用本文： | 元勇,朱旭东,冯远程. 离散Gabor变换在电网瞬态信号滤波中的应用[J]. 华东电力, 2006, 34(11): 11-13 |
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| 作者姓名： | 元勇 朱旭东 冯远程 |
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| 作者单位： | 上海交通大学,电气工程系,上海,200030;上海交通大学,电气工程系,上海,200030;上海交通大学,电气工程系,上海,200030 |
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| 摘 要： | 提出一种基于离散Gabor变换的滤波算法,可以对瞬态信号进行时频分析,并选择合适的阀值抑制噪声,实现瞬态波形和噪声的分离.大量的数字处理结果表明该方法可以有效地恢复信号且保持信号的原始特征.
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| 关 键 词： | 离散Gabor变换 瞬态波形 时频分析 信号滤波 |
| 文章编号： | 1001-9529(2006)11-0011-03 |
| 修稿时间： | 2006-08-14 |
Application of discrete Gabor transform to filtering of transient electric power signals |
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| YUAN Yong,ZHU Xu-dong,FENG Yuan-cheng. Application of discrete Gabor transform to filtering of transient electric power signals[J]. East China Electric Power, 2006, 34(11): 11-13 |
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| Authors: | YUAN Yong ZHU Xu-dong FENG Yuan-cheng |
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| Abstract: | A filtering algorithm based on discrete Gabor transform is proposed,which can be used to conduct time-frequency analysis for transient signals.The appropriate threshold values can then be determined to limit the noise,and the transient wave can be separated from the noise consequently.Numerical processing results show that the algorithm can effectively restore the signals and maintain their original characteristics. |
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| Keywords: | discrete Gabor transform transient wave time-frequency analysis signal filtering |
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