基于声场模型的猎雷声纳探测成像仿真方法

Mine-hunting Sonar Imaging Simulation based on Underwater Acoustic Field

摘要:

摘要：针对猎雷声纳对水雷目标探测仿真问题，提出一种基于运动学信息与水下声场传播耦合分析的探测成像仿真方法。首先利用Bellhop3D声场分析方法对水下声信道信号冲击响应进行计算，结合信号复分析方法得到信号传播信道参数以构建声散射模型，以运动耦合方式综合分析声纳搭载平台位置、姿态及速度等因素对回波信号的影响，通过综合考虑上述因素来模拟目标回波信号，从而利用较为真实的等效回波信号进行图像重构。以高频前视声纳为例，对声纳探测沉底水雷目标情况进行了仿真。结果表明，本文方法能够得到高频声纳对沉底水雷目标的探测图像，与实际情况具有一致性，可为进一步构建反水雷相关模拟仿真训练系统提供参考。

Abstract:

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.