空基反导以其部署灵活、响应速度快等特点而受到各军事大国高度重视。针对常见的规划弹道，对处于飞行中段的弹道导弹进行拦截具有诸多优势，因此，为拦截器设计一种精确、能耗最优的中制导律至关重要。首先，本文基于简化的弹－目相对运动学模型，运用LQR理论设计了一种新的能量最优空基反弹道导弹中制导律；其次，根据给定的弹－目初始条件，通过数字仿真对所设计的制导律进行了验证。结果表明，本文提出的制导律可以较好地满足空基拦截弹道导弹中制导要求。%The air-based anti-missile method has been drawn high value by many great military pow-ers in the world for its flexible deployment and quick reaction .It is extremely important to design a pre-cise and energy optimal midcourse guidance law for the interceptor considering the advantages to intercept the ballistic missiles in the midcourse according to some common planned trajectory .Firstly, this thesis designs a new midcourse guidance law for air-based intercepting ballistic missile based on LQR theory by using a simplified relative kinematic model of “Interceptor-Target”, then the new guidance law is verified by digital simulation with the initial condition of the “Interceptor-Target”.The results show that the new designed midcourse guidance law could meet the requirement of the midcourse guidance properly in an air -based anti-missile system .
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