The phenomenon of stochastic resonance with ship hydrodynamic pressure field

Noise, though considered harmful through the ages, when acting on nonlinear system can be useful under certain conditions. In this thesis, the phenomenon of stochastic resonance produced by the ship hydrodynamic pressure field signal against the background of ocean wave hydrodynamic pressure field signal is discussed. When the ship hydrodynamic pressure field signal mixed with the wave hydrodynamic pressure field signal passes the nonlinear stochastic resonator constructed on the basis of the bistable system and reciprocal of power spectrum integral, the system´s output signal will show peak values at the appearance of ships, which suggests the existence of the phenomenon of stochastic resonance and the nonlinear stochastic resonator´s ability to detect the ship hydrodynamic pressure field signal.