基于声场模型的猎雷声呐探测成像仿真方法  

Minehunting Sonar Imaging Simulation Based on Underwater Acoustic Field Model

作　　者：蒋文聪[1] 张宏欣 JIANG Wencong;ZHANG Hongxin(Division 43,Unit 91439 of PLA Dalian 116041,China)

机构地区：[1]中国人民解放军91439部队43分队,辽宁大连116041

出　　处：《数字海洋与水下攻防》2022年第3期250-255,共6页Digital Ocean & Underwater Warfare

摘　　要：针对猎雷声呐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。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呐搭载平台位置、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。以高频前视声呐为例,对声呐探测沉底水雷目标情况进行了仿真,结果表明,该方法能够得到高频声呐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。Aiming at the simulation of mine target detected by minehunting sonar,a detection imaging simulation method based on the coupling analysis of kinematic information and underwater acoustic field propagation is proposed. First,the Bellhop3D acoustic field analysis program is used to calculate the impulse response of the underwater acoustic channel signal. Combined with the signal complex analysis method,the parameters of the signal propagation channel are obtained to construct the acoustic scattering model. The influence of the position,attitude and speed of the sonar-loading platform on the echo signal is comprehensively analyzed by means of motion coupling. By comprehensively considering the above factors,the target echo signal is simulated,so as to use the more real equivalent echo signal for image reconstruction. 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 is simulated. The results show that high-frequency sonar detection image of the bottom mine target can be obtained with this method,which is consistent with the actual situation,and can provide a reference for the further construction of mine countermeasures simulation training system.

关 键 词：声场分析 散射模型 猎雷声呐 探测 成像 

分 类 号：TJ610[兵器科学与技术—武器系统与运用工程]