一种电视制导无人机大落角对地攻击末制导律

摘要

针对电视制导无人攻击机对地面运动目标进行攻击的问题,提出了一种带落角约束的自适应滑模变结构末制导律.该制导律通过引入基于弹目视线角速度的反馈、弹目视线角与期望落角之差的反馈及变结构项实施控制;通过合理调整三者的比例关系,可以满足制导精度和落角的双重要求.仿真实验结果表明,该制导律对地面运动目标的速率变化具有较强的鲁棒性,对无人攻击机的作战使用具有指导意义.%A terminal guidance law of the self-adaptive Sliding Mode Variable Structure (SMVS) considering angular constraint was proposed for TV-guided UCAV to attack moving targets on the ground. The proposed guidance law implemented the control by introducing feedback of angle of sight rate, feedback of the difference between the angle of sight and the required angle of sight, and variable structure term. By adjusting proportions of the three parts reasonably, the guidance law could meet the demands of both guidance precision and impact angle. Simulation results show that the guidance law has strong robustness to the speed change of the moving targets on the ground, and is thus instructive for combat operation of UCAV.