关于多级导弹弹道优化建模仿真

Optimized Trajectory Modeling and Simulation of Multi-stage Ballistic Missile

多级弹道导弹弹道建模是建立导弹主被动段各阶段的动态飞行模型,难点在于导弹受力情况复杂,各阶段弹道参数变化规律不同。现有的弹道仿真模型存在模型复杂、精确度低、简化导弹初始运动状态而无法全面反映主被动段运动特点等问题。为解决这些问题,在分析导弹不同阶段受力情况的基础上,提取重要模型变量,建立了参数时变的弹道模型。同时,根据导弹飞行程序的工程设计方法拟定了导弹主动段俯仰角随时间的变化规律。最后以某两级洲际弹道导弹为对象,对提出的模型进行了仿真,并就仿真数据进行了分析,结果表明时变参数弹道模型能够更加全面的反映多级导弹的主被动段运动特点。

Aimed at building dynamic flight models of powered phase and unpowered phase of ballistic missile,the difficulties of trajectory modeling is missile＇s complex flight stress and time-varying trajectory parameters. Existing trajectory models have the problems such as model complexity,low accuracy and cannot overall reflect the movement features of the powered phase of the ballistic missile because of the initial simplify. Considering these problems,the missile＇s flight stress condition of various phases was analyzed and important model＇s variables were extracted,thus to build the parameters-varying trajectory model. Meanwhile,the variation of the missile active segment elevation angle with the time was formulated based on the design of flight procedure. Finally,the proposed model was simulated with the two-stage intercontinental ballistic missile. The simulation results and the model was analyzed to prove that it can reflect the movement characteristics better.