一种具有机动目标加速度补偿的制导律设计

Design of terminal guidance law with acceleration compensation of maneuvering target

基于防空导弹拦截大机动目标减小脱靶量的目的,采用经典PID控制中误差反馈的方法设计了拦截大机动目标的制导律。通过建立机动目标的“当前”统计模型与弹目相对运动方程,对模型进行离散化、线性化,利用扩展卡尔曼滤波的方法估计出目标机动加速度信息,解决了制导律对目标机动加速度信息的需求。通过计算机仿真,对制导过程中导弹的末端过载收敛性与脱靶量等性能指标的对比分析,验证了所设计的制导律在拦截机动目标的性能优于比例导引。

Based on the purpose of air defense missile intercepting large maneuvering target and reducing CEP,a guidance law of intercepting large maneuvering target is designed by using the error feedback method of classical PID control.By establishing the“current”statistical model of maneuvering target and the relative motion equation of missile and target,the model is discretized and linearized,and the acceleration of maneuvering target is estimated by extended Kalman filter.The requirement of terminal guidance law is satisfied with the estimated acceleration of maneuvering target.Through computer simulation,the performance of terminal overload convergence and miss distance is compared and analyzed,and the performance of the designed guidance law is better than proportional guidance in intercepting maneuvering target.