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目标辐射噪声线谱的特征建模与检测
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].海军工程大学学报,2006,18(6):45-48.
作者姓名:胡伟文  肖锋  苑秉成
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
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.在利用中值滤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.

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
修稿时间:2006年5月21日

Research on modelling and detection of ship radiated-noise line spectrum
HU Wei-wen,XIAO Feng,YUAN Bing-cheng.Research on modelling and detection of ship radiated-noise line spectrum[J].Journal of Naval University of Engineering,2006,18(6):45-48.
Authors:HU Wei-wen  XIAO Feng  YUAN Bing-cheng
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.
Keywords:
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