So the characteristic information of the original signal can be well held by analyzing the IMFs.The experimentation testifies that the EMD method applies to linear and stationary signal.

• 而各个内在模函数包含并突出了原信号的局部特征信息，这样通过对各内在模函数进行分析，便能够良好的把握原信号中所含有的特征信息量。