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 Yang Li,Si-chun Li,Sheng-chun Piao and Shi-jun Sun.Application of Empirical Mode Energy to the Analysis of Fluctuating Signals[J].Journal of Marine Science and Application,2010,(1):99-104.
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Application of Empirical Mode Energy to the Analysis of Fluctuating Signals


Application of Empirical Mode Energy to the Analysis of Fluctuating Signals
Yang Li Si-chun Li Sheng-chun Piao and Shi-jun Sun
Yang Li Si-chun Li Sheng-chun Piao and Shi-jun Sun
National Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
empirical mode decomposition energy feature extraction fluctuant signal analysis
After an aerial object enters the water, physical changes to sounds in the water caused by the accompanying bubbles are quite complex. As a result, traditional signal analyzing methods cannot identify the real physical object. In view of this situation, a novel method for analyzing the sounds caused by an aerial object’s entry into water was proposed. This method analyzes the vibrational mode of the bubbles by using empitical mode decomposition. Experimental results showed that this method can efficiently remove noise and extract the broadband pulse signal and low-frequency fluctuating signal, producing an accurate resolution of entry time and frequency. This shows the improved performance of the proposed method.


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Last Update: 2010-04-16