心电图波形特征提取是针对一维心电信号的弱信号特征提取。
The feature extraction of ECG waveform is a kind of weak signal characteristic extraction aiming at one dimension ECG signal.
对加速度进行特征提取，可以使得波形的幅度特征更加明显，有利于进行轨道故障的检测。
The waveforms 'amplitude character will be more distinct through accelerations 'feature extraction, and this is propitious to rail deformation detection.
以毫米波敏感器在军事中的应用为背景，对毫米波敏感器信号的波形特征进行分析，采用小波变换进行目标信息的特征提取。
On the basis of the applications of MMW sensors to the munitions, this thesis analyses the wave characters of MMW sensors 'signal, use wavelet transform to extract the features of target information.
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