基于落点预测补偿的激光末修弹脉冲点火相位研究

Research on Firing Phase Angle of Laser Terminal Correction Projectile Based on Impact Point Prediction Compensation

为得到脉冲控制激光半主动末段修正弹落点精度更高的修正力作用方向,提出在传统点火相位计算基础上加入落点预测补偿,并通过建立激光探测器目标方位模型,结合脉冲力的纵向和横向修正能力的分析,推导出改进后的点火相位。采用六自由度弹道仿真进行验证,结果表明,采用文中点火相位进行弹道修正后,落点偏差明显减小,平均脱靶量从56.3m减小到13.1m,圆概率误差从48.1m减小到12.4m,证明了该方法的有效性,为末段修正弹控制策略的设计提供了理论依据。

To get the direction of correction force which leads to the higher impact-point accuracy of semi-active laser impulse terminal correction projectile（TCP）,a new method of impact point prediction compensation added to the calculation of traditional firing phase angle was proposed. The target-orientation model of laser detector was established.The improved firing phase angle was deduced by analyzing the longitudinal and lateral correction capability by impulse forces.A 6-DOF trajectory simulation was used to validate the proposed method.The results show that the average miss distance decreases from 19.9 m to 13.1 m,and the circular error probability decreases from 27.7m to 12.4m after the ballistic correction under the proposed firing phase angle compared with the traditional firing phase angle.The proposed method is effective,and it provides a theoretical basis for the design of control strategy of TCP.