高超声速滑翔飞行器预测校正闭环协同末制导方法

A closed-loop guidance solution based on a flight time predictor and a flight profile corrector is proposed for the time cooperative problem in the terminal guiding phase of hypersonic glide vehicles with continuous energy decay. Firstly, parameterized proportional guidance flight profile with negative coefficient is designed. The remaining time of the vehicle could be predicted after the aerodynamic uncertainty identification. Secondly, the flight profile parameter is corrected by the numerical algorithm. Then the command could guide a single vehicle to meet time constraints. Thirdly, a closed-loop coordination strategy is designed. The time adjustment capability of the vehicle is analyzed with flight profile coefficient. Multiple vehicles could plan the expected flight time and corresponding flight profile independently for cooperative terminal guidance tasks. The simulation results show that the cooperative guidance law could meet the needs of time cooperative terminal guidance tasks, the position error is less than 5 meters, and the relative time error is less than 1 second.