电视指令制导导弹目标攻击中载机航迹规划研究

为提高电视指令制导导弹的命中精度,突防载机在导弹发射后必须满足导弹使用的约束条件选择航迹才能保证导弹命中目标。在分析防区外使用电视指令制导导弹进行对地精确打击时飞机航迹特点的基础上,结合飞机性能及导弹制导要求,建立了满足导弹制导约束条件下的飞机航迹规划模型;并且在传统A*算法的基础上,提出了一种改进的A*算法,该算法有效地将约束条件和航迹寻优算法有机结合在一起,提高了算法的收敛速度,更加符合航迹规划的要求。仿真表明建立的导弹制导过程中战斗机航迹规划模型和改进算法能够找到满足导弹使用的突防航迹。

Research on Carrier Airplane's Path Planning in the Course of Attacking Target by TV Instruction Guided Missile

In order to improve the hitting ground target precision of the TV instruction guided missile, carrier airplane must select a flight trajectory which meets the missile's restraint conditions after launching missile. On the basis of analyzing the flight trajectory's characteristics outside defence area, linking with the airplane's capability and missile guidance requirement, a mathematic model of the flight trajectory was built; an improved A~* algorithm was presented based on traditional A~* algorithm, which combines flight path's optimum search algorithm with restraint conditions efficiently, to improve algorithm's convergence rapidity and accord with path planning much more. The optimum penetration trajectories at the different threat cost weights were simulated by the model and the algorithm based on an example. The simulated results show that the model and the algorithm are effective.