Abstract:In recent years, with strong underwater plasma technology breakthrough and its descaling in pipe, sewage treatment, ocean geological exploration, underwater target detection in the areas of significant achievements and successful application, provides us a new way of thinking: using underwater plasma intensity acoustic pulses with the torpedo homing system, reception to make its homing receiving system blocking blindness, suppressing effect. This paper analyzes the circuit principle of a torpedo homing receiver, establishes a simulation model of the receiver preprocessing circuit based on Multisim, and simulates the jamming and suppression characteristics of the strong sound pulse on the receiver preprocessing. The research results have important reference value for the engineering application of underwater plasma ultra-wideband pulse, and have certain reference value for the research of anti-jamming characteristics of torpedo receiver system.