| 基于小波变换与支持向量机的舰船水压信号检测方法 |
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| 引用本文： | 姜礼平,姜润翔,张志宏,龚沈光.基于小波变换与支持向量机的舰船水压信号检测方法[J].武汉理工大学学报(交通科学与工程版),2008,32(2):283-286. |
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| 作者姓名： | 姜礼平 姜润翔 张志宏 龚沈光 |
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| 作者单位： | 1. 海军工程大学理学院
2. 海军工程大学兵器工程系,武汉,430033 |
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| 摘 要： | 采用小波变换与支持向量机相结合对舰船水压场信号建立检测模型.该方法通过对海浪信号进行小波分解并对某一特定低频频段信号重构,利用支持向量机对重构信号建立预测模型,预测误差值作为特征值对舰船水压信号进行检测.通过检测验算表明此方法的有效性,特别是在低信噪比情况下,仍能较好地检测到目标信号.
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| 关 键 词： | 特征提取 目标检测 支持向量机 小波变换 舰船水压场 |
| 修稿时间： | 2007年12月4日 |
Detecting Hydrodynamic Pressure Signal of Ship under Wind Wave Background Based on WT and SVM |
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| Jiang Liping,Jiang Runxiang,Zhang Zhihong,Gong Shenguang.Detecting Hydrodynamic Pressure Signal of Ship under Wind Wave Background Based on WT and SVM[J].journal of wuhan university of technology(transportation science&engineering),2008,32(2):283-286. |
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| Authors: | Jiang Liping Jiang Runxiang Zhang Zhihong Gong Shenguang |
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| Abstract: | In order to detect ship hydrodynamic pressure signal from wind wave background,according to the characteristic difference between ship hydrodynamic pressure signal and wave noise,a target detection method has been proposed based on the WT and SVM.The signal is decomposed using the wavelet transform in a set of constitutive series.Then the future values of a special constitutive series are forecast using properly fitted SVM model.The prediction errors are employed to detect the target signal.By this method,it is possible to recognize whether target signal is involved or not in received signals.The effectiveness of the method is verified by a real target signal with additive simulated noise signal,especially under the condition of low SNR. |
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| Keywords: | feature extraction target detection support vector machine(SVM) wavelet transform(WT) ship hydrodynamic pressure field |
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