Extraction and application of the low dimensional dynamical component from underwater acoustic target radiating noise

作     者：LIANG Juan, LU Jiren (Depertment of Radio Engineering, Southeast University Nanjing 210096) 

作者机构：Department of Radio EngineeringSoutheast University Nanjing210096 

出 版 物：《Chinese Journal of Acoustics》 (声学学报（英文版）)

年 卷 期：2001年第20卷第4期

页      面：319-326页

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

主　　题：Extraction and application of the low dimensional dynamical component from underwater acoustic target radiating noise 

摘      要：Signal processing in phase space based on nonlinear dynamics theory is a new method for underwater acoustic signal processing. One key problem when analyzing actual acoustic signal in phase space is how to reduce the noise and lower the embedding dimen- sion. In this paper, local-geometric-projection method is applied to obtain fow dimensional element from various target radiating noise and the derived phase portraits show obviously low dimensional attractors. Furthermore, attractor dimension and cross prediction error are used for classification. It concludes that combining these features representing the geometric and dynamical properties respectively shows effects in target classification.