考虑落速落角约束的高速飞行器末制导方法

For the problem of terminal fixed-speed and fixed-direction guidance for high-speed glide vehicles，considering terminal flight path angle，heading angle，and velocity constraints，a dual-loop corrector terminal guidance method is proposed. To address the guidance law parameters affecting the terminal trajectory of the vehicle，two correction loops for the guidance parameters are designed. Utilizing numerical integration to predict the terminal state deviation，the guidance parameters are adjusted online. A bias increment update method based on state feedback is designed，endowing the guidance law with the ability to adjust the impact angle and finely tune the terminal speed. An appropriate guidance coefficient profile form and parameter correction method are designed，giving the guidance law the ability to quickly adjust the terminal speed. Through a coordinated correction strategy of the two correction loops and an event-triggered mechanism，the control accuracy of the terminal speed and impact angle is ensured. Simulation results indicate that the proposed guidance algorithm can accomplish terminal flight missions under different impact angle and velocity constraints. It demonstrates strong robustness to initial state deviations and aerodynamic parameter disturbances and meeting the real-time requirements of guidance law.