| 基于高阶统计量的小波包去噪在瞬态信号检测中的应用研究 |
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| 引用本文： | 江向东,杨德森,时胜国.基于高阶统计量的小波包去噪在瞬态信号检测中的应用研究[J].信号处理,2005,21(2):126-130. |
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| 作者姓名： | 江向东 杨德森 时胜国 |
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| 作者单位： | 哈尔滨工程大学水声工程学院,哈尔滨,150001 |
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| 基金项目： | 海军预先研究资助项目(41303080108)资助 |
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| 摘 要： | 本文提出了一种基于高阶统计量的小波去噪的瞬态信号检测方法,这种检测方法结合了小波包多分辨率分析和高阶量的抗高斯干扰特性,因而优于传统的能量检测方法。仿真研究和实验数据处理结果表明,在较低信噪比时,能量检测失效,本检测方法使得检测工作得以继续。
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| 关 键 词： | 被动声纳检测 瞬态信号 小波包分解 高阶统计 自适应频段划分 ROC曲线 |
Wavelet Packets De-Noising Based on High-Order-Statistic for Transient Detection |
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| Jiang Xiangdong,Yang Desen,Shi Shengguo.Wavelet Packets De-Noising Based on High-Order-Statistic for Transient Detection[J].Signal Processing,2005,21(2):126-130. |
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| Authors: | Jiang Xiangdong Yang Desen Shi Shengguo |
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| Abstract: | In this article, a detection method of acoustic transient signal is presented, this method combine the two powerful tool for transient signal detection: wavelet packets and HOS. An algorithm of de-noising using wavelet packets based on four-order-statistic is developed. The results show that the detector based on this method performs better than the adapted energy detector, especially in the low SNR case. |
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| Keywords: | passive sonar detection transient signal wavelet packets decomposition HOS adapted frequency band merge ROC curve |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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