基于成像点轨迹的末段修正弹控制策略

基于成像点轨迹的末段修正弹控制策略

李兴隆1,王晓鸣1,姚文进1,吴银海2

(1.南京理工大学 智能弹药国防重点学科实验室,南京 210094;2.73146部队,福建 泉州 362000)

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。

关键词:末段修正弹;脉冲修正;控制策略;激光半主动制导;制导律

收稿日期:2014-01-13

基金项目:中央高校基本科研业务费专项资金资助项目(30920130122001)

作者简介:李兴隆(1988- ),男,博士研究生,研究方向为智能弹药技术。E-mail:lixinglong.sj@163.com。

中图分类号:TJ43文献标识码:A

ControlStrategyofTerminalCorrectionProjectileBasedon

theTrackofTargetImagingPoints

LIXing-long1,WANG Xiao-ming1,YAO Wen-jin1,WU Yin-hai2

(1.ZNDYofMinisterialKeyLaboratory,NUST,Nanjing,210094,China;2.Unit73146ofPLA,Quanzhou362000,China)

Abstract: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 48.1m 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.

Keywords:terminalcorrectionprojectile;pulsecorrection;controlstrategy;semi-activelaserguidance;guidancelaw

传统无控弹丸落点散布大,激光半主动末段修正弹在弹道末段根据探测器得到的目标方位信息,在适当的时机以一定的角度将脉冲发动机点火,通过脉冲力作用有效修正落点偏差。

国内葛贤坤提出当单级脉冲力修正后计算的弹道偏差小于此级脉冲作用前弹道偏差的一半时,脉冲开始点火,此修正策略需根据弹丸实时位置信息来估计落点。……