越肩发射反导拦截弹复合制导律研究

Research on Compound Guidance Law for Anti- Missile Interceptor Over the Shoulder

研究了优化反导拦截弹的越肩发射制导律,实现了对尾追目标的拦截,采用伪谱法和滑膜变结构理论设计了全弹道复合制导规律。利用Radau伪谱法求解以转弯时间最优为指标泛函的最佳转弯规律,通过曲线拟合给出了初制导转弯段的过载指令。选择零控脱靶量作为滑动模态对末制导律进行设计;利用这两种制导律的加速度指令构造了交接班导引律实现弹道的平滑。最后,对载机越肩发射反导拦截弹拦截来袭导弹的反导场景进行了数字仿真,结果表明所设计的复合制导律能够完成反导拦截任务。

To optimize the over-the-shoulder guidance law of anti-missile interceptor and realize the interception of tail-chase target,a compound guidance law is designed for anti-missile interceptor over the shoulder,using pseudospectral method and sliding mode theory.Firstly,taking the turning time as the functional index,the optimum turning guidance is designed by Radau pseudospectral method,and the overload command of initial guidance turning section is given by curve fitting.Next,choosing zero-effort miss (ZEM) as sliding mode,the sliding mode control theory is employed to design the terminal guidance law.Then a handing-off law is constructed using the acceleration command of two guidance laws above.Finally,the anti-missile inception scene is simulated to show the compound guidance law can meet the requirement of anti-missile inception mission.