红外制导导弹最优导引律工程实现方法研究

Research on Engineering Application Method of Infrared Missile Based on Optimal Guidance

为了研究提高导引精度,用最优控制理论推导出的最优比例导引律,给出了一种只需目标视线角速率信息的最优比例导引律工程实现方法,方法不需要最优比例导引律中的相对速度、目标加速度和剩余时间等信息,与基于小离轴角的假设推导得出的经典的比例导引律相比,可满足近距格斗导弹大离轴发射和攻击高机动目标的要求。经仿真结果证明,最优比例导引律的工程实现方法尤其适合不带测距功能的红外制导导弹,与需要剩余时间估计算法的方法相比具有更强的工程可实现性。

Based on Optimal Proportional Guidance Law derived from optimal control theory, an engineering application method which only requires the angle rate of line of sight is proposed. This method does not need the information of the relative velocity, target acceleration and time to go of the Optimal Proportional Guidance Law. Compa- ring with the Classical Proportional Guidance Law which derived on the hypothesis of small off - boresight angle, this guidance law fulfills the maneuverability of high off - boresight condition and the request of attacking high maneuvering target of short - range combat missile. Simulation results show that, this engineering application method of Optimal Proportional Navigation is especially suitable for infrared missile without velocity measuring function. Comparing with the application method which requires time to go estimation arithmetic, this method has more engineering feasibility.