HHT就是先将信号进行经验模态分解（EMD分解），然后将分解后的每个IMF分量进行Hilbert变换，得到信号的时频属性的一种时频分析方法。-HHT is a first signal to carry on the empirical mode decomposition (EMD decomposition), and then decomposed each IMF component of the Hilbert transform, get signal time-frequency

经验模式分解,用于局域波分解,使用于多分量信号分析-Empirical mode decomposition for local wave decomposition, used in multi component signal analysis