Study on PSD and Time-frequency Analysis of Two Charges′ Underwater Explosion Signal
Zhihua Zhang · Blasting · 2010
For effectively analyzing the characteristic of underwater explosion signal,the Bartlett and Welch methods were used to estimate the power spectral density of two charges′ underwater explosion signal,and then compared with the normal power spectral density.The autoregressive parameters are obtained through modern spectrum analysis.At last underwater explosion signal is analyzed via short time Fourier transform and wavelet transform,which reveals the distribution rule between explosion energy and frequency.