对弹道导弹运动状态的实时跟踪是进行反导系统研究要解决的关键问题之一。文中针对此问题,首先分析了弹道导弹的运动特性,建立了重力转弯条件约束下的动力学模型;其次分析了动力学模型中的参数,建立了简化了的弹道导弹运动模型;最后对状态变量进行了适当选择,推导了弹道导弹运动状态方程,仿真了基于EKF的实时估计方法,结果表明使用文中所提出的弹道导弹跟踪建模方法跟踪精度较高。

Ballistic missile tracking is one of key technologies in missile defense. In this paper, the method of ballistic missile modeling and tracking was investigated. Firstly, the ballistic missile's dynamic model was built under the condition of gravity turn; Secondly, the ballistic missile's simplified kinetic model was built. Lastly, the kinetic state function was educed and the method of real-time estimation was simulated. The result shows that the proposed method can track the ballistic missile; what is more, the estimation precision is high.