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针对高超声速滑翔飞行器滑翔再入制导问题,提出了一种基于高度变化率反馈的改进倾侧角校正方法。在不依赖准平衡滑翔条件下,该方法可以得到较为平滑的弹道。纵向制导采用落点误差预测校正倾侧角指令,同时以终端平衡滑翔倾侧角作为终端倾侧角,可以提高终端高程精度。横侧向制导设计了航向角误差走廊边界控制倾侧角反转,以保证制导精度。仿真结果表明,该算法制导指令解算时间小于1s,制导精度较高。
Aiming at the gliding reentry guidance problem of hypersonic gliding aircraft, an improved method based on altitude change rate feedback is proposed. This method can get a smoother ballistic trajectory without depending on the quasi-equilibrium gliding conditions. Longitudinal guidance uses the fall error prediction to correct the tilting angle command, and at the same time balances the gliding tilting angle as the terminal tilting angle to improve the terminal elevation accuracy. Lateral guidance design of the heading error corridor boundary control tilting angle reversal, in order to ensure guidance accuracy. The simulation results show that the guidance time of this algorithm is less than 1s and the guidance accuracy is high.