pre hilbert norm

In order to decrease the random noise influence upon the empirical mode decomposition(EMD),a method utilizing the empirical mode decomposition and Hilbert transfer after the wavelet denoising to extract instantaneous features of signals is described.

为了消除随机噪声对经验模式分解(EMD)质量的影响,提出利用小波去噪作为EMD的预处理,并结合希耳伯特变换提取信号瞬时参数的方法。