一种基于分步过渡的再入段组合导引法

针对比例导引法在弹道导弹再入段误差修正时可能引起的导弹攻角和侧滑角变化剧烈的问题,提出了一种基于分步过渡的再入段组合导引法,并采用了一种考虑弹道倾角增量和弹道偏角增量变化范围的过渡段计算方法。仿真结果表明,改进的组合导引法减小了侧滑角和横向过载的变化范围,并减弱了两种导引法交班段的攻角、侧滑角和过载突变问题,在保证导弹末段飞行稳定控制的同时减小了再入段误差对导弹射击精度的影响。

A combined guidance method during reentry phase based on step transition

Aiming at the dramatic variety of attack angle and sideslip angle during the reentry error correction,a kind of combined guidance method during reentry phase based on step transition is proposed,and a kind of computational method considering the variation extent of trajectory tilt-angle and deflection-angle during transition phase is adopted.The simulation results show that,the variation extent of sideslip angle and lateral overload of improved combined guidance method are reduced,the mutation of attack angle,sideslip and overload are mitigated during hand-over phase,and the influence of reentry error is reduced meanwhile the stable control during terminal phase is ensured.