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首先分析了传统时频分析方法的特点及其局限性 ,而后评述了一种最新的适用于非平稳、非线性信号的通用的时频分析方法——基于经验的模式分解及希尔伯特变换谱 ,指出了该方法需进一步研究的有关问题
Firstly, the characteristics and limitations of the traditional time-frequency analysis method are analyzed. Then a new general time-frequency analysis method for non-stationary and non-linear signals is reviewed, which is based on empirical mode decomposition and Hilbert transform Spectrum, pointed out the method needs further study of the relevant issues