基于高斯伪谱法的高超声速飞行器再入制导研究

Research on Reentry Integrated Guidance Law of Hypersonic Velocity Aircraft Based on the Gauss Pseudo-spectral Method

针对高超声速飞行器再入标准轨迹制导方法中存在的制导准备周期长、弹上需存储标准轨迹参数、制导鲁棒性较差等缺点,提出一种基于高斯伪谱法与滚动时域控制技术相结合的高超声速飞行器再入预测-校正制导方案;其中,在线高斯伪谱法采用纵/侧向结合、全程一体化的制导算法思路,实现了对高超声速飞行器再入弹道的全程预测制导;同时结合滚动时域控制技术从工程上实现了高超声速飞行器再入制导中对开环制导信息的闭环应用,完成了飞行器预测-校正制导方案;通过对高超声速飞行器再入制导过程进行仿真分析,结果表明应用文章设计的基于高斯伪谱法与滚动时域控制技术相结合的高超声速飞行器再入预测-校正制导方案,飞行器再入过程中具有良好的制导性能。

In order to solve the problems of the re--entry process of hypersonic velocity aircraft by using the standard trajectory method. Article gives a Gauss pseudo--spectral method to solve the re--entry problem of hypersonic velocity aircraft. The guidance combines the Gauss Pseudo--spectral Method and the Rolling--time Control Method. For the Gauss Pseudo--spectral Method which based on the integra- tion idea that includes the vertical and the lateral side. And the integration includes All--trajectory integration also. By using the Rolling-- time Control method, the guidance could realize the open--loop orders. As the result of the simulation, the data shows that after combine the two methods of Gauss Pseudo--spectral and the Rolling--time Control in hypersonic aircraft guidance control, the aircraft achieve a satisfac- tory result in re--entry trajectory.