Troop 91439 Division 43
Abstract：Aiming at the simulation of target detection by sonar, a detection imaging simulation method based on the coupling analysis of kinematic information and underwater sound field propagation is proposed. The method first uses the Bellhop3D acoustic field analysis program to calculate the underwater acoustic channel signal impulse response, combines the simplified sound scattering model and the signal complex analysis method, and quantitatively considers the influence of the position, attitude and speed of the sonar loading platform to simulate the target more completely Echo signal, and perform equivalent signal processing according to the imaging principle of sonar detection to realize imaging simulation. Taking an unmanned underwater vehicle equipped with a high-frequency forward-looking sonar as an example, the sonar detection of mine targets on the bottom of the sea was simulated. The results show that this method can obtain the high-frequency sonar detection image of the target, which has some consistency with the actual sonar detection situation, and can provide a reference for the further construction of anti-mine correlation simulation training system.