| 舰船辐射噪声的混沌特性检验 |
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| 引用本文： | 闫源江,甘新年,胡光波. 舰船辐射噪声的混沌特性检验[J]. 舰船电子工程, 2011, 31(1): 61-63,155 |
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| 作者姓名： | 闫源江 甘新年 胡光波 |
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| 作者单位： | 1. 宝鸡43信箱68分箱,宝鸡,721006
2. 91640部队,湛江,524064 |
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| 摘 要： | 为提取舰船目标辐射噪声混沌特征，实现对舰船目标的自动识别，首先需要对舰船辐射噪声的混沌特性进行检验。采用一种改进的Lyapunov指数谱估计方法，计算其最大Lyapunov指数是否大于零，以及所有的Lyapunov指数之和是否小于零来判定噪声时间序列是否具有混沌特性。采用三类舰船目标辐射噪声作仿真计算，仿真结果表明三类舰船辐射噪声都具有一定的混沌特性，该结论为下一步基于混沌预测的目标检测以及提取舰船辐射噪声非线性混沌特征等工作奠定了理论基础。
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| 关 键 词： | 舰船辐射噪声 混沌 Lyapunov指数 |
Testing for Chaotic Property for Ship Radiated Noise |
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| Yan Yuanjiang,Gan Xinnian,Hu Guangbo. Testing for Chaotic Property for Ship Radiated Noise[J]. Ship Electronic Engineering, 2011, 31(1): 61-63,155 |
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| Authors: | Yan Yuanjiang Gan Xinnian Hu Guangbo |
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| Affiliation: | Yan Yuanjiang1) Gan Xinnian2) Hu Guangbo2)(P.O.Box 43-681),Baoji 721006)(No.91640 Troops of PLA2),Zhanjiang 524064) |
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| Abstract: | For extracting the nonlinear and chaotic feature of ship radiated noise,and recognizing ship target.Chaotic property should be tested based on the ship radiated noise firstly.An improved Lyapunov exponent spectrum estimation algorithm is proposed.To test the chaotic property of the noise time series through estimating the maximum Lyapunov exponent is greater than zero and the sum of all the exponents is less than zero.The radiated noise data of 3 types of ship targets is used for simulation,result shows tha... |
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| Keywords: | ship radiated noise chaos Lyapunov exponent |
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