摘要
基于小波包变换的优良时频分析特性 ,通过引入子频带的∞—范数来定量地描述瞬时信号在时频空间中的分布 ,提出了瞬时信号去噪和频谱分析的新方法。理论分析和实验结果表明本方法简单。
According to the excellent time frequency localization analysis properties of the wavelet packet,this paper discribes the distribution of the instantaneous signal quantitatively in time frequency space by introducing the ∞-norm.Then proposes a method of noise cancelling and spectral analysis of instantaneous signal.Theoretical analysis and the results of experiments both indicate that this method is simple and reliable.
出处
《电子测量与仪器学报》
CSCD
2000年第2期1-5,共5页
Journal of Electronic Measurement and Instrumentation
基金
国家质量技术监督局资助项目
