小波分析在高频电流信号分析中的应用

Application of the Wavelet Transform to the Analysis of the High Frequency Current Signal

该文介绍了小波变换研究背景、定义及应用,介绍了连续小波变换和离散小波变换相关的基本理论,并充分利用小波分析在时频分析中的优势,将小波分析应用于高频采样的电流信号降噪中,结果表明:较去噪前,高频电流中的背景干扰大大降低,小波变换对于高频电流信号的降噪效果较好。

This paper introduces the wavelet transform research background, definitions and applications, the basic theory of continuous wavelet transform land discrete wavelet transform is also introduced, and take full use of the advantages of wavelet analysis in the time--frequency analysis.The wavelet analysis is applied to the denoising of the high sampling frequency current signal. The results showed that：compared with before denolsing,the high frequency background interference current is greatly reduced, and wavelet transform denoising of high--frequency current signal is of good effect