Based on the principle of modulus maximum, a new approach using scalogram of wavelet transform for transient signal, under noise free condition or noise condition separately, is described.

• 针对光滑瞬态信号的特点，研究了信号在高斯连续小波变换下具有的时频特性，提出了一种适用于检测光滑瞬态信号波至点的新方法，通过建立的检测函数能精确定位信号或含噪信号的波至点。