Underwater target feature extraction using Hilbert-Huang transform

作者：Li Xiu Kun^*; Xie Lei; Qin Yu

来源：Journal of Harbin Engineering University, 2009, 30(5): 542-546.

DOI：10.3969/j.issn.1006-7043.2009.05.014

• Characteristic extraction
• HHT
• Highlight model
• Hilbert marginal spectrum
• Hilbert spectrum

To deal with the problem of ineffective extraction in underwater target feature extraction methods based on traditional time-frequency analysis, a new time-frequency analysis method, the Hilbert-Huang Transform (HHT) was applied. Both simulation and experimental data analysis revealed that HHT has high resolution ability. The Hilbert marginal spectrum can highlight the elastic parts of the target. The Hilbert spectrum shows the highlighted structure of targets, as well as more accurate than Wavelet Transform in time-frequency resolution. The research shows different properties between the Hilbert spectrums of a target echo and of reverberation, and the Hilbert marginal spectrum can restrain reverberation efficiently. It is clear that HHT is an effectively method for extracting characteristics of underwater targets.

• 出版日期2009
• 单位哈尔滨工程大学