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A Study of Oceanic Reverberation Mod

時(shí)間:2023-05-03 00:43:00 天文地理論文 我要投稿
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A Study of Oceanic Reverberation Modeling Based on a Nonlinear Low-Dimensional Dynamic System

Acoustic reverberation signals generated by an experimental explosive source are analyzed by nonlinear dynamical methods. Three characteristic parameters, i.e., the correlation dimension, the largest Lyapunov exponent, and the Koimogorov en-tropy, are estimated in the reconstructed phase space. The results indicate that the reverberation signals are nonlinear. The Volterra adaptive prediction method is introduced to model the oceanic reverberation signals. The reverberation time series can be predicted in short term with small prediction errors. A preliminary conclusion can be reached that the nonlinear low-dimensional dynamic sys-tem model is more suitable for modeling oceanic reverberation than the classical random AR model.

作 者: REN Xinmin WANG Ning XU Hongmei   作者單位: Information Science and Engineering College, Ocean University of China, Qingdao 266100, P. R. China  刊 名: 中國(guó)海洋大學(xué)學(xué)報(bào)(英文版)  ISTIC 英文刊名: JOURNAL OF OCEAN UNIVERSITY OF CHINA  年,卷(期): 2008 7(2)  分類號(hào): P7  關(guān)鍵詞: oceanic reverberation   nonlinear   Volterra adaptive prediction  

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