学术
基于现代信号处理技术的舰船噪声信号DEMON分析
程玉胜[1] 王易川[2] 史广智[2] 惠俊英[1]
[1]哈尔滨工程大学,哈尔滨150001 [2]海军潜艇学院,青岛266071
摘 要:
DEMON分析是舰船噪声目标识别的重要分析手段之一。通过DEMON分析可以获得诸如舰船螺旋桨转速、螺旋桨叶片甚至舰船的车数等不变的舰船物理特征。在过去的DEMON分析中，通常采用经典的周期图方法。本文采用了高阶谱分析、小波的予频带分析以及基于互相关函数矩阵奇异值分解等方法，对舰船噪声信号进行了分析。从对大量的舰船噪声信号的分析来看，在大多数情况下现代谱分析技术具有优势，但并不是所有情况下其性能均优于周期图方法。[著者文摘]
文章出处:
《声学技术》-2006年25卷1期 -71-74页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-3630（2006）-01-0071-04
DEMON analysis of underwater target radiation noise based on modern signal processing
CHENG Yu-sheng, WANG Yi-chuan, SHI Guang-zhi, HUI Jun-ying （1.Harbin Engineering University, Harbin 150001, China; 2. Navy Submarine Academy, Qingdao 266071, China）
Abstract:
DEMON analysis is one of the most important means for underwater target recognition. Many invariable physical features can be obtained with DEMON analysis such as revolution rate of propeller, the propeller vane, and the number of propellers. Traditionally, periodogram is used. This paper uses the high order spectrum, wavelet subband analysis, and singular value decomposition of correlation function matrix. The results show that modern spectrum analysis is more effective in most cases. However, sometimes it is inferior to the periodogram method.[著者文摘]
Key words:
sonar; target recognition; ship-radiated noise ; DEMON
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