小波变换的多分辨性及在电力信号分析中的应用

Multi-resolution Characteristic of Wavelet Transformation and Its Application to Electric Signal Analysis

文章介绍了小波变换的多分辨分析理论及其在电力信号特征提取和消噪方面的应用。通过对仿真结果分析可知,小波分解得到的高频系数能够清晰地反映信号中的细节特征,通过对高频分量的处理和重构可以得到信号中有用的特征量或除去信号中的噪声。

The paper introduced the basic theory of wavelet multi-resolution decomposition and studied its application to feature extracting and noise eliminating of electric signals. The result of simulation analysis showed that high frequency component gained from wavelet decomposition could distinctly reflect the details of signals. Through the disposal and reconstruction of high frequency component in signals, useful features in signals could be obtained or the noise in signals could be removed.