| 基于chirplet的匹配追踪在超声导波信号处理中的应用 |
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| 引用本文： | 李城华,王悦民,朱龙翔.基于chirplet的匹配追踪在超声导波信号处理中的应用[J].舰船电子工程,2010,30(12):174-177. |
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| 作者姓名： | 李城华 王悦民 朱龙翔 |
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| 作者单位： | 海军工程大学船舶与动力学院,武汉430033 |
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| 基金项目： | 中国博士后科学基金项目，湖北省自然科学基金项目 |
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| 摘 要： | 使用基于chirplet时频原子的匹配追踪方法,对超声导波管道检测信号进行分析处理,并与基于Gabor时频原子的处理结果进行了比较。研究结果表明,chirplet时频原子能反映出的超声导波检测信号的频率变化特征,得到的时频分布与频散曲线能很好的吻合,基于chirplet原子的匹配追踪方法更适合于超声导波检测信号处理。
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| 关 键 词： | 匹配追踪 chirplet原子 超声导波 时频分布 |
Ultrasonic Guided-wave Signal Processing Via Matching Pursuit Based on Chirplet |
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| Li Chenghua,Wang Yuemin,Zhu Longxiang.Ultrasonic Guided-wave Signal Processing Via Matching Pursuit Based on Chirplet[J].Ship Electronic Engineering,2010,30(12):174-177. |
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| Authors: | Li Chenghua Wang Yuemin Zhu Longxiang |
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| Institution: | Li Chenghua Wang Yuemin Zhu Longxiang(College of Ship and Power,Naval University of Engineering,Wuhan 430033) |
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| Abstract: | Maching pursuit based on chirplet time-frequency atoms was utilized to process ultrasonic guided-wave pipeline detection signals,and the results were compared with that using Gabor functions.The study shows that,chirplet atoms can reveal the time-frequecny varying characteristic of ultrasonic guided-wave detection signals,the achieved time-frequency representation match the dispersion curves,and matching pursuit based on chirplet can be better applied to ultrasonic guided-wave detection signal process. |
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| Keywords: | matching pursuit chirplet atom ultrasonic guided-wave time-frequency representation |
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