| 目标辐射噪声线谱的特征建模与检测 |
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| 引用本文： | 胡伟文,肖锋,苑秉成.目标辐射噪声线谱的特征建模与检测[J].海军工程学院学报,2006,18(6):45-48. |
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| 作者姓名： | 胡伟文 肖锋 苑秉成 |
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| 作者单位： | [1]海军工程大学理学院,湖北武汉430033 [2]中国船舶工业集团公司船舶系统工程部,北京100036 [3]海军工程大学兵器工程系,湖北武汉430033 |
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| 摘 要： | 在理论分析的基础上，构造了基于λ水平能量聚点的目标辐射噪声线谱的特征量模型．在利用中值痣波去除信号功率谱中“平台型”的λ水平能量聚点后，计算其λ水平能量聚点作为拟线谱频率，通过拟线谱频率对应周期的整周期延时叠加突出线谱特征，以提高辐射噪声线谱的检测率．理论分析和对仿真信号的计算结果表明，该算法是有效的．
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| 关 键 词： | 模型 辐射噪声 λ水平能量聚点 线谱检测 |
| 文章编号： | 1009-3486（2006）06-0045-04 |
| 收稿时间： | 2006-05-21 |
| 修稿时间： | 2006-06-16 |
Research on modelling and detection of ship radiated-noise line spectrum |
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| Authors: | HU Wei-wen XIAO Feng YUAN Bing-cheng |
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| Abstract: | This paper establishes a model of line-spectrum for ship radiated-noise on the basis of theoretical analysis. By using the medium processing, the quasi-line-spectrum frequency was obtained after removing power gathering-point which has a shape of platform in the power spectrum of signal. To examine the quasi-line-spectrum frequency, the signal in time domain was added to its postponements of one or several periods which can be calculated from the quasi-line-spectrum frequency,and the detection of line-spectrum was fulfilled. The effectiveness of algorithm was verified by the theoretical analysis and digital simulation. |
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