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 enhance-ment 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.