| 强干扰背景下的鱼雷辐射噪声信号检测方法 |
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| 引用本文： | 蒋小勇,杜选民.强干扰背景下的鱼雷辐射噪声信号检测方法[J].声学技术,2010,29(1):18-22. |
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| 作者姓名： | 蒋小勇 杜选民 |
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| 作者单位： | 上海船舶电子设备研究所,上海,201108 |
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| 摘 要： | 常规被动声纳利用宽带波束能量进行目标检测,在低信噪比、强目标干扰情况下,宽带能量检测的性能迅速降低。利用鱼雷辐射噪声信号中含有丰富线谱成分的特点,提出了一种针对鱼雷辐射噪声信号的窄带和宽带联合检测方法。通过对预成波束方向信号的窄带处理和线谱提取,利用特定频段的线谱能量对宽带波束输出进行加权,提高了线谱目标的检测能力。该方法能够有效地抑制非线谱强干扰目标,提高低信噪比信号的检测能力。仿真和海试数据处理结果验证了该方法的有效性。
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| 关 键 词： | 被动声纳 宽带检测 窄带检测 鱼雷辐射噪声 |
| 收稿时间： | 2009/1/12 0:00:00 |
| 修稿时间： | 2009/3/23 0:00:00 |
Detection of torpedo radiated noise in strong interference background |
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| JIANG Xiao-yong and DU Xuan-min.Detection of torpedo radiated noise in strong interference background[J].Technical Acoustics,2010,29(1):18-22. |
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| Authors: | JIANG Xiao-yong and DU Xuan-min |
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| Affiliation: | JIANG Xiao-yong,DU Xuan-min (Shanghai Marine Electronic Equipment Research Institute,Shanghai 201108,China) |
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| Abstract: | Broadband energy detection has been widely used to passive sonar.But its performance degrades dramatically under condition of the low SNR and strong interference.Since there are abundant line spectra in torpedo radiated noise,a combined detection algorithm of the torpedo radiated noise is put forward.After each beam output is processed by the narrowband processing and line spectrum extraction,the energy of line spectrum with specified frequency band is used as the weighted factor of broadband beam output in... |
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| Keywords: | passire sonar broadband detection narrowband detection torpedo radiated noise |
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