针对某高超声速飞行器末制导段攻角非负及大落角约束要求,提出"BTT180控制方法+具有落角约束的最优制导"组合制导方式.在末制导初始段,采用 BTT180 控制方式实现飞行器的翻身下压,解决了攻角非负的约束要求;选择具有角速率反馈形式的最优制导律,实现攻击末端大落角的约束要求.对不同初始高度和约束落角以及垂直攻击时不同初始弹道倾角下的飞行轨迹进行仿真分析,结果表明该组合制导方式使飞行器在命中目标的同时,满足攻角非负及落角约束要求,验证了该制导律的有效性和准确性.%According to the requirement that hypervelocity vehicle`s angle of attack can`t be negative in terminal guidance phase with large impact angle constraint, method of BTT180 is utilized to make the vehicle turn over and descend to avoid negative angle of attack; and optimal guidance law with line-of-sight rate feedback is selected to act as terminal guidance law to satisfy impact angle constraint. Results of trajectory simulations with different trajectory inclination angles in vertical attack, different initial heights and angle constraints in non-vertical attack demonstrate the accuracy, validity and good adaptability of the proposed method.
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