基于改进预测校正的滑翔飞行器再入制导方法

Gliding Vehicle Reentry Guidance Based on Improved Predictor-Corrector

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。

Regarding the reentry trajectory guidance problem in hypersonic glide vehicle,an improved predictor-corrector guidance method based on the feedback of the altitude change rate is proposed. Smooth trajectory can be generated by applying this method which is independent of the quasi equilibrium glide condition( QEGC). The longitudinal guidance is developed by predicting the longitudinal range error and correcting the magnitude of the bank angle command,meanwhile. This paper presents that it can improve the height precision if the terminal bank angle meets the QEGC. A lateral reversal logic based on the heading angle error corridor is designed for lateral guidance. The simulation results show that the proposed method generates the guidance commands in less than 1 second and has high guidance precision.