制导炸弹自适应比例末制导律研究

Terminal Adaptive Proportional Guidance Law for Guided Bomb

针对制导炸弹采用捷联导引头和进行侵彻型攻击的技术要求,设计了一种具有终端角度约束的自适应比例导引律。基于经典比例导引关系,首先以期望落角为性能指标推导出变系数导引律,然后利用反馈的误差信息对导引系数进行自适应闭环校正,以增强导引律的鲁棒性。仿真结果表明,所设计的制导律具有较高的制导精度,并且满足落角约束要求。

An adaptive proportional guidance law with angular constraint is developed for guided bomb,which meets the requirements of strap-down seeker and penetrating attack. Firstly,a gain variable proportional navigation guidance law was derived by classical proportional navigation and desired impact angle. Then,a closed-loop correction of guided coefficients was proposed for the sake of robustness enhancement of the guidance law. Simulation studies show that the presented guidance law can implement efficiently the angular constraint mission as well as preferable guidance precision.