海洋环境影响声自导鱼雷的弹道分析与动态仿真

Trajectory Analysis and Dynamic Simulation for Acoustic Homing Torpedo Influenced by Marine Environment

针对海洋环境引起的声自导鱼雷的声探测偏差问题,基于Argo资料,运用动态和对比分析,研究了鱼雷搜索和自导两个阶段中海洋环境对其声探测的影响机制、鱼雷声线轨迹偏差的纠正对策并进行仿真实现。结果表明:在搜索段,海况对鱼雷发现目标的时机具有显著的影响;在自导段,垂直温盐梯度的存在使鱼雷弹道产生偏差、遭遇时间变短、总航程缩短、最大需用过载变大,采取相应的纠正对策可以有效地降低鱼雷的脱靶量、提高自导性能。

Aiming at acoustic detection bias of acoustic homing torpedo influenced marine environment,by making use of the comparative analysis and dynamic analysis methods and Argo data,the following topics in both search phase and self-directed phase of torpedo are investigated.The mechanism of marine environment impacting on torpedo＇s acoustic detection,the strategy of rectifying the bias of torpedo＇s sound ray tracing and their simulations.The results are shown as follows： in search phase,sea condition remarkably determines the time that the torpedo detects its target,while in self-directed phase,the exist of vertical temperature and salinity gradients generates the trajectory＇s bias,shortens the encounter time and the total distance,increases the maximum required overload,and the torpedo＇s final miss distance can be effectively decreased by taking the corresponding correction measures,thus improving its homing performance.