基于L_(1)制导的巡飞弹航迹跟踪技术

Course Tracking Technology of Loitering Missile Based on L_(1)Guidance

针对巡飞弹航迹跟踪问题,基于L_(1)制导律,提出了一种巡飞弹航迹跟踪方法。首先,将航迹跟踪分为圆航迹跟踪和直线航迹跟踪,分别针对初始位置与理论航迹的几何关系,推导了不同状态下前置角的表达式;然后,提出了圆航迹和直线航迹跟踪策略,确保巡飞弹无超调的沿着理论航迹飞行;最后,通过仿真验证,提出的制导策略对圆形航迹与多边形航迹具有良好的跟踪效果,L_(1)训导律比PD控制收敛更快,稳态误差更小。

Based on the L_(1)guidance law,this paper proposes a track tracking method for loitering missiles.Course tracking is divided into circular course tracking and straight course tracking.According to the geometric relationship between the initial position and the theoretical course,the expressions of the leading angle under different states are derived,and the circular course and straight course tracking strategies are proposed to ensure that the loitering missile can fly along the theoretical course without overshoot.Finally,the simulation results show that the proposed guidance strategy has good tracking effect on circular course and polygonal course.