Sampling Analysis and Realization of the Subaqueous Explosion Signal

This paper describes the subaqueous explosion signal,it is single and transient,it consists of shock wave and pulsating wave. The frequency of shock wave is no more than 10 kHz,and 0.1 kHz for pulsating wave. According to Nyquist sampling theorem and oversampling theory,the oversampling frequency of shock wave is 1 MHz,and 40 kHz for pulsating wave. MAX153 based on half-flash technique is a high-speed ADC,the sampling system composed of MAX153 and AT89C51 can sample the shock wave and pulsating wave. This paper designs the sampling frequency,sampling time,and channel amplification factor.