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| 希尔伯特-黄变换在海浪资料分析中的应用 | |
| 引用本文： | 周伟,王瑞燕,周卓月. 希尔伯特-黄变换在海浪资料分析中的应用[J]. 黑龙江电子技术, 2014, 0(3): 43-46 |
| 作者姓名： | 周伟 王瑞燕 周卓月 |
| 作者单位： | [1]91388部队,广东湛江524000 [2]山东农业大学资环学院,山东泰安271018 |
| 基金项目： | 山东省自然科学基金（ZR2009BQ017）;山东省研究生教育创新计划项目（SDYY09044）;山东省高等学校科技计划项目（J11LC11） |
| 摘 要： | 海浪是一种非线性、非稳态线性波动过程,常用的傅里叶分析分辨率不高,且会产生不存在的噪声信号.对此,将Hilbert-Huang变换应用到海浪资料分析中,即通过经验模态分解把海浪分解成13个子波,再对这些子波进行Hilbert变换,得到海浪的Hilbert谱.数据分析发现,该方法在得到风浪和涌浪的子波分量的同时,还得到了浅水碎波拍的子波分量,并清楚地表明了海浪高频有界性和微弱低频波动的存在. |
| 关 键 词： | 海浪 经验模态分解 Hilbert-Huang变换 |
Hilbert-Huang transform analysis of wave data |
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| ZHOU Wei,WANG Rui-yan,ZHOU Zhuo-yue. Hilbert-Huang transform analysis of wave data[J]. , 2014, 0(3): 43-46 | |
| Authors: | ZHOU Wei WANG Rui-yan ZHOU Zhuo-yue |
| Affiliation: | 1. Unit 91388 of PLA, Zhanjiang 524000, Guangdong Province,China; 2. School of Resources and Environment, Shandong Agricultural University, Tai＇ an 271018, Shandong Province, China) |
| Abstract: | Ocean wave is a nonlinear and nonstafionary wave, the Fourier analysis resolution is not high and also produces noise signal. This paper applied the Hilbert-Huang transform to the wave data analysis：decomposed the wave data into 13 IMFs by EMD, then Hilbert transform is made for each of 13 IMFs to obtain Hilbert spectrum of wave. The results show that sub wave of surf storm and ground swell were got, meanwhile the existence of wave＇s upper frequency limitation and weak low-frequency fluetuations was made clear. |
| Keywords: | ocean wave EMD Hilbert-Huang transform |
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