| 基于Gabor变换的信号降噪方法 |
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| 引用本文： | 张光明,申永军,吴彦彦.基于Gabor变换的信号降噪方法[J].石家庄铁道学院学报(社会科学版),2009(3):86-90. |
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| 作者姓名： | 张光明 申永军 吴彦彦 |
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| 作者单位： | 石家庄铁道学院 机械工程分院;石家庄铁道学院 机械工程分院;石家庄铁道学院 机械工程分院 |
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| 基金项目： | 国家自然科学基金(10602038)；教育部科学技术研究重点项目(209013) |
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| 摘 要： | 介绍了Gabor变换的基本理论，提出了一种基于Gabor变换的降噪方法。该方法首先对信号进行Gabor变换，并选择合适的阈值对Gabor展开系数进行处理，然后对处理后的Gabor展开系数进行Gabor逆变换，从而实现降噪。仿真结果表明，该方法具有很好的降噪效果，为机械故障诊断提供了一种新的思路。
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| 关 键 词： | Gabor变换 故障诊断 降噪 |
| 收稿时间： | 2009/5/8 0:00:00 |
A De noising Method Based on Gabor Transform |
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| Authors: | Zhang Guangming Shen Yongjun and Wu Yanyan |
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| Institution: | Department of Mechanical Engineering, Shijiazhuang Railway Institute;Department of Mechanical Engineering, Shijiazhuang Railway Institute;Department of Mechanical Engineering, Shijiazhuang Railway Institute |
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| Abstract: | The theory of the Gabor transform is introduced and a de noising method based on the Gabor transform is proposed. At first, the Gabor transform is applied to the signal and the Gabor expansion coefficients are processed by the appropriate threshold valve. Then the de noised signal is obtained by the Gabor inverse transform. The simulated results indicate that this method has good de noising effect, and can provide a new means for mechanical diagnosis. |
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