APPLICATION OF WAVELET ANALYSIS TO THE PROCESSING OF NON-IDEAL SHOCK WAVE SIGNAL

摘要

Measurement of explosive shock wave is one of the important studying contents of explosive phenomenon and mechanism, and affects success of the study. However, the signal is weak and lots of disturbances widespread for far-field or small charge measurements, good result cannot be obtained by conventional time-frequency domain methods. For this reason, a wavelet-based de-noising method is applied in this article to filter the shock wave signal. It is shown that this method can maintain not only high fidelity of wave shapes but also situation information of signal. Therefore, it is suitable for the processing of this sort of signal.