基于成像点轨迹的末段修正弹控制策略

摘要

针对激光半主动末段修正弹的控制策略问题,提出了根据激光探测器上目标成像点运动轨迹确定控制策略的方法。根据实时测量的弹体滚转角,建立了弹体滚转解耦模型；分析了弹体滚转解耦后的目标成像点轨迹,得到脉冲发动机启控时机和点火相位角；通过六自由度弹道仿真,研究了某型末段修正弹在该控制策略下的修正效果。结果表明,采用文中修正策略后,脱靶量显著减小,圆概率误差从48.1 m 减小到14.6 m,且对弹道偏差的侧向修正效果比纵向修正效果更好,对脉冲控制末修弹药的脉冲参数优化和导引律设计具有参考价值。%Aiming at the control strategy of semi-active laser terminal-correction-projectile(TCP), a method of determining the control strategy according to the track of target imaging points was proposed.The rolling decoupling model was built by measuring the rolling angle real-timely.The track of target imaging points after rolling decoupling was analyzed,and the pulse firing time and firing phase angle were obtained.The correction effect of a certain type TCP was studied under this control strategy through simulating the trajectory of six-degree-freedom.The results show that by using correction strategies,the miss distance decreases significantly,and the circular error probability decreases from 48.1 m to 14.6m,and the correction effect in cross direction is better than range direction.The result has important significance to pulse parameters optimization and the design of guidance law.