Design of Virtual Target Guidance Law for Anti-Torpedo Torpedo
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摘要: 为使反鱼雷鱼雷(ATT)快速发现来袭鱼雷, 实现快速占位, 研究了一种新的最佳导引弹道, 利用目标运动特性信息引入虚拟目标, 设计了考虑终端角约束的偏置比例导引律, 以此虚拟目标将ATT按设计的导引律引向真实目标。仿真结果表明, 在典型ATT拦截来袭鱼雷态势下, 引入虚拟目标设计的偏置比例导引律能够使ATT快速发现来袭鱼雷, 有效提高ATT的拦截概率和潜艇的战场生存能力。Abstract: A new program-controlled initial trajectory allowing an anti-torpedo torpedo(ATT) to find the incoming torpedo quickly and achieve rapid occupation was investigated in this study. A virtual target was introduced according to the target motion characteristics, and a bias proportional guidance law considering the terminal angle constraint was designed. The virtual target led the ATT to the real target according to the designed guidance law. Simulation results indicated that in a typical situation of an ATT intercepting incoming torpedoes, the introduced virtual target and the bias proportional guidance law designed for the ATT can help the ATT quickly detect incoming torpedoes. They can significantly increase the interception probability of ATTs and thus enhance the battlefield survivability of submarines.
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图 1 ATT、来袭鱼雷与潜艇相对运动关系示意图
Figure 1. Relative motion diagram of an ATT, an incoming torpedo and a submarine
图 2 侧平面中ATT与来袭鱼雷相对运动关系
Figure 2. Relative motion diagram of an ATT and an incoming torpedo in the lateral plane
图 4 ATT、来袭鱼雷与潜艇运动轨迹仿真结果
Figure 4. Simulation results of movement trajectory of an ATT, an incoming torpedo and a submarine
图 5 虚拟目标导引下ATT各参数变化曲线
Figure 5. Curves of parameters of an ATT under virtual target guidance
表 1 2种方法发现来袭鱼雷时终端角对比
Table 1. Comparison of terminal angles when the incoming torpedo is found by two methods
方法 虚拟目标偏角/(°) ATT偏角/(°) 来袭鱼雷偏角/(°) 终端角/(°) 虚拟目标导引 −144.13 63.82 −137.62 207.95 一次
转角— 50.84 −139.94 190.78 
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表 2 2种方法发现来袭鱼雷用时与脱靶量对比
Table 2. Comparison of found times and miss distances when the incoming torpedo is found by two methods
方法 发现来袭鱼雷
用时/s脱靶量/m 虚拟目标导引 32.25 0.67 一次转角 37.05 0.85
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