| 海浪水压场的混沌特性分析及预测模型 |
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| 引用本文： | 单志超,林春生,向前.海浪水压场的混沌特性分析及预测模型[J].武汉理工大学学报(交通科学与工程版),2008,32(6). |
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| 作者姓名： | 单志超 林春生 向前 |
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| 作者单位： | 1. 海军工程大学兵器工程系,武汉,430033
2. 海装武汉局701代表室,武汉,430000 |
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| 基金项目： | 国防基金项目资助
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| 摘 要： | 海浪水压场作为水中兵器水压引信最严重的干扰源,对其混沌特性进行研究具有极为重要的意义.依据判断系统是否具有混沌特性的2个重要指标:关联维数和最大Lyapunov指数,分别通过G-P算法和小数据量的Wolf算法进行了计算.对一定数量的海浪水压场数据所进行的计算表明,海浪水压场具有分数的关联维数和正的Lyapunov指数,表现出明显的混沌特性.在此基础上依据混沌信号的相空间重构理论使用支持向量机对海浪水压场进行了预测建模,结果表明非线性混沌模型较常规的线性AR模型具有更高的预测精度.
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| 关 键 词： | 海浪水压场 混沌 关联维数 Lyapunov指数 预测建模 |
The Analysis of Wave Hydrodynamic Pressure Signals With Chaos Method and the Prediction Model |
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| Shan Zhichao,Lin Chunsheng,Xiang Qian.The Analysis of Wave Hydrodynamic Pressure Signals With Chaos Method and the Prediction Model[J].journal of wuhan university of technology(transportation science&engineering),2008,32(6). |
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| Authors: | Shan Zhichao Lin Chunsheng Xiang Qian |
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| Affiliation: | Dept.of Weaponry Engineering;Naval Univ.of Engineering;Wuhan 430033;Naval Deputy of 701 Institute;Wuhan 430000 |
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| Abstract: | As a major interference source to the pressure fuze of the underwater ordnance,the research of chaos character to the wave hydrodynamic pressure is important.For the correlation dimension and the largest Lyapunov exponent is the two key indexes to judge the chaos character of the system,they are calculated respectively by the G-P algorithm and the Wolf algorithm.The calculated results of many samples display the wave hydrodynamic pressure have fractional correlation dimension and positive largest Lyapunov e... |
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| Keywords: | wave hydrodynamic pressure chaos correlation dimension largest Lyapunov exponent prediction model |
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