A Fast Algorithm for Extracting the Characteristic Parameters of Impulse Response Signal

摘要

Based on the analysis of the traditional methods which require a large amount of computation, a fast algorithm for extracting the characteristic parameters of impulse response signal is proposed. In this method, the signal is processed with the wavelet transform to get the positions of the impulse components by using its characteristic of time-frequency localization. Then the computing interval which is much shorter than that of the traditional algorithm is set with the position of the impulse as the center. The characteristic parameters are extracted by searching the maximum of the correlation coefficient between the fault signal and the Laplace wavelet in the interval. The simulation result shows the method can extract the characteristic parameters quickly and accurately.