基于谱估计的飞行目标声特征提取方法  

Acoustic feature extraction of aero targets based on spectrum estimation

作　　者：钟宏业[1] 郭英[1] 杨旺高[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《微计算机信息》2008年第25期301-302,150,共3页Control & Automation

摘　　要：目标噪声特征分析和提取是目标分类器设计的关键技术。本文针对战场目标声识别,着重研究了基于Welch功率谱估计的特征分析方法,并将其应用于飞机、直升机、坦克、汽车等战场目标的声信号处理中。通过分析得出不同类型目标的谱特征,以此达到对战场目标类型进行分类识别的目的。通过实验验证了该方法具有较好的分类效果。Feature extraction of targets radiated-noise is key technique of design of targets classifier. In this paper, a feature analy-sistechnique based on Welch power spectrum density estimation is studied and used in the process of audio signals which radiated by the targets in the battlefield such as plane, helicopter, tank and motorcar. By this analysis, we can get the fetures of different kinds of targets and classify them. Good effect of classification is proved by the test.

关 键 词：目标声识别 Welch谱估计 特征分析 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]