经验模式能量在脉动信号分析中的应用
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： 李杨 李思纯 朴胜春 孙世钧 Yang Li Si-chun Li Sheng-chun Piao Shi-jun Sun 作者单位： 刊 名： 船舶与海洋工程学报（英文版） 英文刊名： JOURNAL OF MARINE SCIENCE AND APPLICATION 年，卷(期)： 2010 9(1) 分类号： U6 关键词： empirical mode decomposition energy feature extraction fluctuant signal analysis