基于成像点轨迹的末段修正弹控制策略

Control Strategy of Terminal Correction Projectile Based on the Track of Target Imaging Points

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48.1m减小到14.6m,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 48.1mto 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.