Application of Wavelet Packet Transform in Simulation of Hard Target Penetration
Jing Kang · Tance yu kongzhi xuebao · 2002
The acceleration and velocity signals obtained from simulation of hard target penetration are unsteady, and comprise plenty of frequency. Owing to the excellent characteristic of time frequency localization, wavelet packet is rather suitable for analyzing this kind of signals. In this paper, based on summarizing the wavelet and wavelet packet theory, the acceleration signal is decomposed into different frequency bands by wavelet packet at first, then the signal of each frequency band is reconstructed and their spectrum is analyzed. In the end the engineering significance of wavelet packet is discussed.