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导弹与目标的遭遇点坐标是地空导弹指挥控制系统进行射击指挥决策的关键依据之一,必须建立精准快速的预测模型或算法。针对非机动空气动力目标,研究了遭遇点预测的解析模型和迭代算法。解析模型中,将导弹引导过程近似为平行接近法,导弹匀速飞向瞬时遭遇点;迭代算法中,根据导弹常用的视线法和比例导引法解算导弹的运动学弹道,来预测瞬时遭遇点坐标。仿真分析表明,解析模型和迭代算法设计合理有效,前者简捷快速,适用于作战单元指挥控制系统;后者较为精准,实时性好,适用于火力单元指挥控制系统。两种方法都具有较强的工程应用价值,为指挥控制系统研制提供实用的模型技术支持。
Missile and target encounter point coordinates is the command and control system of ground to air missile command and decision making of the key basis for one must be to establish accurate and rapid prediction model or algorithm. For the non-maneuvering aerodynamic target, the analytic model and iterative algorithm of the encounter point prediction are studied. In the analytical model, the missile guidance process is approximated by the parallel approach and the missile flew at uniform velocity to the instantaneous encounter point. In the iterative algorithm, the missile’s kinematic trajectory is calculated according to the line-of-sight method and proportional guidance method commonly used in the missile to predict the instantaneous encounter point coordinate. The simulation analysis shows that the analytical model and the iterative algorithm are reasonable and effective. The former is simple and quick and suitable for the command and control system of combat unit. The latter is more precise and real-time, and is suitable for the command and control system of fire unit. Both methods have strong engineering application value and provide practical model technical support for the development of command and control system.