經(jīng)驗(yàn)?zāi)Ｊ侥芰吭诿}動(dòng)信號(hào)分析中的應(yīng)用

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 empirical 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.

作 者： 李楊 李思純 樸勝春 孫世鈞 Yang Li Si-chun Li Sheng-chun Piao Shi-jun Sun   作者單位：   刊 名： 船舶與海洋工程學(xué)報(bào)（英文版）  英文刊名： JOURNAL OF MARINE SCIENCE AND APPLICATION  年，卷(期)： 2010 9(1)  分類號(hào)： U6  關(guān)鍵詞： empirical mode decomposition   energy feature extraction   fluctuant signal analysis  

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