小波脊线法在暂态信号检测中的应用

针对传统小波脊线法在暂态信号检测中存在的问题，提出了改进算法。新方法引入小波包变换,扩展了小波脊线法的应用范围，并对算法本身进行了若干改进，基本消除了边界效应，提高了算法进行时频分析的实时性和精度。通过对仿真信号的分析，验证了改进方法的优越性，表明改进算法能有效地消除噪声干扰，提取暂态信号的瞬时频率和瞬时幅值，获得信号完整的、精确的时频分布。

Application of wavelet-ridge method to detect transient signals

Aiming at the problems of the traditional wavelet-ridge method applied in transient signal's detection,this paper puts forward an improved method.By introducing the wavelet-packet transformation,the application area of the wavelet-ridge method is extended.And by improving the method,the boundary effect is mostly eliminated,and the real-time performance and precision are increased.The analysis to the stimulation signal verifies the superiority of the improved method.It also indicates that the improved method...