基于相对速度矢量控制的机动目标角度约束拦截制导律

Impact-Angle-Constrained Guidance Law for Maneuvering Target Interception based on Relative Velocity Vector Control

为提高导弹在攻击角度约束下对机动目标的拦截效能,提出了一种基于相对速度矢量控制的制导策略。通过运动矢量合成建立了虚拟的相对运动坐标系,将常速拦截机动目标问题转化为变速攻击静止目标问题,并基于二阶贝塞尔曲线设计了满足相对航迹角约束的相对运动轨迹,使用轨迹跟踪算法生成制导指令以控制相对速度矢量。仿真结果验证了所提制导律的有效性和优越性。

To improve the effectiveness of missiles against a maneuvering target with an impact angle fixed,a guidance strategy based on relative velocity vector control is proposed.A virtual relative motion coordinate system is established by motion vector synthesis,which transforms the problem of intercepting a maneuvering target under constant velocity into the problem of impacting a stationary target under time-varying velocity.Then a relative motion trajectory satisfying the relative heading angle constraint is designed based on a quadratic Bezier curve,and a trajectory tracking algorithm is employed to generate guidance commands to control the relative velocity vector.Simulation results verify the effectiveness and superiority of the proposed guidance law.