Ship Noise Spectrum Analysis based on HHT

摘要：

Ship noise spectrum analysis by HHT is a new method and essential for underwater target recognition. In the process, the end swings and overshoots/undershoots exist during empirical mode decomposition. Analyzing the feature of the cubic spline interpolation and cubic Hermite polynomial interpolation, a new method was proposed which made use of cubic Hermite polynomial interpolation for envelopes fitting, and the ARMA process combined with period extraction for ending extension to improve the fitting result. Then, a non-stationary time series and two adjacent-frequency signals separation were used to test its efficiency. Finally, in ship noise analysis, we obtained the foundamental frequency and its frequency doubling components satisfactorily.

关键词： empirical mode decomposition intrinsic mode functions envelope fitting interpolation function

作者: Zhang Zhimeng Liu Chenchen Liu Bosheng

作者单位: Dept.of electrical and electronics engineering, Shijiazhuang Tiedao University, Shijiazhuang, China Dept.of information science and technology, Shijiazhuang Tiedao University, Shijiazhuang, China Dept.of underwater acoustic engineering, Harbin engineering University, Harbin, China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 2411-2414

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）