The results show that this improved wavelet-time entropy algorithm can effectively detect the echo signal in ultrasonic signal.
改进过的小波时间熵算法应用于实际超声波回波信号的检测过程表明,能有效的进行超声波回波检测。
·2,447,543篇论文数据，部分数据来源于NoteExpress
The L F signals are transformed by entropy based on wavelet packet algorithms for best basis selection, and the results are displayed in time- frequency space namely phase plane.
该方法采用基于熵的小波包最佳基选取准则，对局部损伤信号进行自适应小波包分解，将分解结果显示于时—频空间即相平面上。
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