基于LOFAR谱和DEMON谱特征的舰船辐射噪声研究  

Ship radiated-noise research based on the LOFAR spectrum and DEMON spectrum characteristics

作　　者：熊紫英[1] 朱锡清[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2007年第2期300-306,共7页Journal of Ship Mechanics

摘　　要：目标识别的核心问题就是目标特征提取。文章用LOFA和DEMON的方法对舰船辐射噪声的谱和频率特性进行分析,给出了方法和结果的简要介绍,并对仿真信号和实船信号分别进行研究,得到了一些具有工程实际意义的计算结果,为舰船的检测识别提供了有效的参考。The key problem of the target identification is target characteristic abstraction.In this paper, the spectrum and the frequency characteristics of the ship radiated-noise were analyzed by using LOFAR and DEMON method.The introduction of the method and some theoretical analysis are given.Emulational signal and real signal are investigated respectively and some useful results which are practical for engineering are presented. It provided effective criterion for the shin detection and identification.

关 键 词：特征提取 LOFAR特征 DEMON特征 舰船辐射噪声 

分 类 号：TB532[理学—物理] U661.44[理学—声学]