空-空导弹全向攻击随机最优制导律

A RANDOM OPTIMAL GUIDANCE LAW OF AIR-TO-AIR MISSILE IN ALL DIRECTIONS

本文从全向攻击的基本思想出发,用最优控制理论和卡尔曼滤波理论推导出能使空-空导弹进行全向攻击的随机最优制导律。该制导律包含目标加速度反馈,能对付机动目标;当目标作非机动飞行时,最优制导律是变比例系数的比例制导。计算机仿真结果表明:最优制导需用过载、终端脱靶量均小于比例制导,特别是当导弹从目标前方攻击时,其制导精度大大优于比例制导。

From the point of all direction attack, the paper obtains a random optimal guidance law which the air-to-air missiles can defeat targets in all directions by applying optimal control theory and kalman filtering theory. It is adapted to win manoeuvrable targets by taking target acceleration into feedback loop. When targets flight with zero load-factor, it is a changeable proportional factor guidance law. The numerical computations confirm that the load-factor needed and the terminal error are much smaller than the ordinary proportional guidance law, especially when missiles attack target in front directions, the guidance precision is much higher than the other guidance law used in missile guidance systems.