一种基于小波奇异值检测的鱼雷电磁引信目标信号特征识别方法

陈 光; 俞金方; 杨清华

doi:10.11993/j.issn.1673-1948.2013.01.007

一种基于小波奇异值检测的鱼雷电磁引信目标信号特征识别方法

doi: 10.11993/j.issn.1673-1948.2013.01.007

中国人民解放军91024部队, 广东台山, 529266

详细信息

中图分类号: TJ431.7
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- 被引次数: 0
出版历程
- 收稿日期: 2012-06-07
- 修回日期: 2012-06-14
- 刊出日期: 2013-02-20

A Feature Recognition Method of Target Signal for Torpedo Electromanetic Fuze Based on Wavelet Transform Singularity Detection

91024th Uint, The People′s Liberation Army of China, Taishan 529266, China

摘要

摘要: 为了确保鱼雷引信可靠动作必须准确提取和识别鱼雷电磁引信目标信号特征, 描述了表征信号奇异性的Lipchitz指数方法, 阐述了基于小波变换的信号奇异值检测原理, 分析了电磁引信目标信号的包络经幅度识别后存在奇异值的情况。基于此, 提出了一种目标信号时间变化率和持续时间特征识别的新方法, 该方法以提取目标信号的实际特征为中心, 通过选择合适的小波基函数和分解尺度, 精确地检测出包络信号的奇异点。仿真结果表明, 相比传统的模拟电路识别方法, 本文提出的方法易于实现, 识别精度高, 且不受门限电压变化的影响, 具有较好的工程应用价值。
- 鱼雷 /
- 电磁引信 /
- 特征识别 /
- 小波变换 /
- 奇异值检测
Abstract: The features of target signal for torpedo electromagnetic fuze must be extracted and recognized exactly to ensure reliable action of torpedo fuze. Lipchitz exponent method for symbolizing signal′s singularity is described, the principle of detecting signal′s singularity based on wavelet transform is introduced, and the presence of singular value in the envelope of the target signal for torpedo electromagnetic fuze after amplitude recognition is analyzed. Then a new recognition method is put forward for the features of time-varying rate and lasting time of the envelope．The method can detect accurately the singular point of the envelope signal by extracting the real feature of target signal and selecting suitable wavelet base function and decomposition scale. Simulation results show that in contrast to traditional recogni-tion methods with analogy circuits, the proposed method is easier in realization with weaker limitation of threshold voltage variation, besides, it has a high recognition precision and good engineering application．
- torpedo /
- electromagnetic fuze /
- feature recognition /
- wavelet transform /
- singular value detection

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参考文献(11)

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