| Hilbert-Huang变换在瞬态信号检测中的应用 |
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| 引用本文： | 杨振,邹男,付进.Hilbert-Huang变换在瞬态信号检测中的应用[J].声学技术,2015,34(2):167-171. |
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| 作者姓名： | 杨振 邹男 付进 |
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| 作者单位： | 中国人民解放军91388部队;哈尔滨工程大学水声技术重点实验室;哈尔滨工程大学水声工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(51209059,61201411);国家“863计划”资助项目(2013AA09A503) |
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| 摘 要： | 空投物体入水时产生具有时域冲击特性的信号,一般称之为瞬态信号。Hilbert-Huang变换可通过经验模态分解和Hilbert谱分析两种方法,从时频角度对瞬态信号进行分析。介绍了Hilbert-Huang变换的基本原理,建立了瞬态信号的数学模型,提出了基于Hilbert-Huang变换的信号重构瞬态信号检测方法,并与传统能量检测器的性能进行了对比分析,最后通过软件仿真和湖试数据处理验证了该方法的可行性和有效性。
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| 关 键 词： | Hilbert-Huang变换 瞬态信号检测 信号重构 能量检测器 |
| 收稿时间： | 2014/3/5 0:00:00 |
| 修稿时间： | 2014/7/7 0:00:00 |
The application of Hilbert-Huang transform in transient signal detection |
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| YANG Zhen,ZOU Nan and FU Jin.The application of Hilbert-Huang transform in transient signal detection[J].Technical Acoustics,2015,34(2):167-171. |
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| Authors: | YANG Zhen ZOU Nan and FU Jin |
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| Affiliation: | YANG Zhen;ZOU Nan;FU Jin;Unit 91388,The People’s Liberation Army of China;Acoustic Science and Technology Laboratory, Harbin Engineering University;College of Underwater Acoustic Engineering, Harbin Engineering University; |
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| Abstract: | When an object airdropped into the water, some signals with impact characteristics in time domain will be generated, which are commonly known as transient signals. Hilbert-Huang Transform could analyze the transient signals in time-frequency domain by empirical mode decomposition and Hilbert spectral analysis. The principle of Hilbert-Huang Transform is introduced, and the mathematic model of transient signal is formed. A new method of transient signal detection based on Hilbert-Huang Transform is proposed, whose performance is analyzed and compared with that of the traditional energy detector. Finally the feasibility and validity of the method are verified by the software simulation and the data processing of lake experiment. |
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| Keywords: | Hilbert-Huang transform transient signal detection signal reconstruction energy detector |
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