基于小波变换的被动声目标识别的研究

The Study of Acoustic Passive Target Recognition Based on Wavelet Transform

首先简单介绍了小波变换,然后针对被动声信号,利用小波变换来完成信号的预处理和滤波,在小波变换后信号某子空问上再进行频域变换(FFT)提取目标的能量特征参数,并以卡车、小轿车和人的脚步为例建立了目标小波变换声信号特征矢量库。

In this paper,an compendious introduction is made of wavelet transform firstly.Then fused on passive noise signal,wavelet transform is application in pretreatment and filter.Following,through FFT in some signal domain,energy feature parametas of the targets are extracted.The characteristic vector is established about some targets such as truck,saloon car,feet finally.