弹道导弹中段诱饵微动特性研究

微动辨识是弹道导弹中段目标识别领域的研究热点,目标的微动特性与其结构、质量分布、初始状态和受力状态密切相关,将根据给定诱饵的重量、几何特性、释放初始状态等,建立诱饵进动、自旋、章动等微运动模型,对微动模型进行深入研究和理论推导,分析得到释放后诱饵的姿态角变化特性、自旋周期、章动角、章动角速率和欧拉角等微运动特征。仿真结果表明文中建立的微动模型,可以有效的对弹道导弹中段诱饵的微动特性进行分析,对比与弹头微运动特征的差异,可以有效的为弹道中段目标识别提供依据。

Micro-motion analysis of decoy in midcourse of ballistic missile

Micro-motion identification of the decoy in midcourse of ballistic missile has aroused general interest in current society, and decoy’s structure, quality distribution, initial state and external force are essential to the micro motion property of the decoy. The micro motion model of the decoy, including the self spin, procession and nutation, is established based on the quality, geometrical character and initially released state. With a deep research into the micro motion model and theoretical derivation, the change rate of the attitude angle, self spin period, nutation angle and nutation angle rate are achieved. Numerical simulations demonstrate the effectiveness of the proposed approach, which can act as a basis for the target identification in comparison with the micro motion property of warhead.