摘要
针对拦截大机动目标的中制导问题,设计了一种最优中制导律.建立了弹目相对运动学模型,以控制能量最小和中末制导交班时刻的速度前置角最小为性能指标,利用伪控制变量方法推导了最优制导律,并给出了一种剩余飞行时间的估计方法.仿真结果表明,所设计的制导律在目标作大机动飞行的情况下,能够有效减小制导指令且使中末制导交班时刻的速度前置角接近于0.
In order to intercept big maneuvering target, an optimal midcourse guidance law was proposed. The relative kinematic relation was established. By minimizing the energy and the velocity deflection angle at the moment of the midcourse-terminal handover, the optimal midcourse guidance law was derived by means of pseudo control variable. During the design process ,an estimation method of time-to-go was put forward. Simulation results show that the proposed guidance law can effectively minimize the normal overload, and reduce the velocity deflection angle to nearly zero while intercepting big maneuvering target.
出处
《弹道学报》
EI
CSCD
北大核心
2012年第3期49-53,共5页
Journal of Ballistics
基金
航空科学基金项目(20090196005
20100196002)
关键词
中制导律
速度前置角
最优控制
midcourse guidance law
velocity deflection angle
optimal control
