Analysis of Shock Wave Test Data in Launching Exhaust Field with Complicated Noise
Zhang Yu Fu · 2001
The intensity of shock wave in launching exhaust field of rocket and missile has been analyzed by using of wavelet technology. To deal with the complicated jet noise, wavelet frequency band spectrum and shock wave intensity index is defined on the base of wavelet coefficient. Through the analysis of shock wave pressure time history data with wavelet decomposition and wavelet frequency band spectrum, the frequency band in whch shock wave energy concentrates is determined. The shock wave intensity of different test position is compared with the use of intensity index.