基于阻力加速度指令快速解析与跟踪的中段制导方法

A Middle Phase Guidance Method Based on Drag Acceleration Command Rapidly Calculating and Tracking

提出一种基于阻力加速度指令快速解析与跟踪的制导方法。通过一维质点运动学解析并加权直接得到阻力加速度指令,主要靠攻角进行跟踪,实现对终端速度的控制;通过纵向比例导引生成过载指令,靠倾侧角进行跟踪,实现对终端高度的控制;倾侧角优先用于辅助跟踪阻力加速度指令,满足给定条件后切换至高度控制。对于航迹方向角的控制通过倾侧角按反转走廊边界改变正负号实现。动压、热流、过载等约束可通过相关敏感参数设计得到满足。该方法用于准平衡滑翔段可实现对终端速度和终端高度的高精度控制。

A method based on drag acceleration command rapidly calculating and tracking is proposed.Drag acceleration command is calculated directly by one-dimensional particle kinematics and weighting,and tracked by the attack angle to control the terminal velocity.The normal overload command is acquired by proportional navigation and tracked by the bank angle to control the terminal height.The bank angle is used to track drag acceleration command supplementary in the early stage.After a given criterion is satisfied,the bank gngle switches to height control.For the lateral guidance,azimuth deviation is restricted by the bank angel reverse.The dynamic pressure,heat flow and overload constraints can be satisfied by specific sensitive parameters design.The terminal velocity and height can be controlled with high-accuracy by the applying proposed method.