The Study on Optimal Wavelet Base of Shock Signal Due to Internal Explosion
Lian Yunmeng · Journal of Projectiles.Rockets.Missiles and Guidance · 2012
To recover the shock pressure signal with strong noise due to internal explosion,the time-frequency characteristics of three commonly used wavelet bases contained DbN,SymN and CoifN were analyzed.Considering the rapid mutations and multi-peaks of overpressure,sym10 has the strongest capability to recover shock signal by comparing the different abilities of reconstructing the primary shock wave and the accuracy of extracting characteristic signal under strong-noise among DbN,SymN and CoifN wavelet bases.Thus sym10 is the optimal wavelet base of recovery pressure signal due to internal explosion.