To solve the problem of gliding re-entry vehicles being affected by wind interference from near space,the impact point error caused by the wind field is analyzed using the predictor-corrector guidance method.The error is estimated online by the adaptive filtering method,and the position of the terminal point is adjusted to compensate for the impact of the wind field on the re-entry path of the vehicle.At the same time,the amplitude parameter of the bank angle is determined by receding horizon optimization so that the parameter is updated with the change in the range to go,thereby improving the terminal guidance accuracy.Finally,the Monte Carlo method is employed to simulate the flight path under the influence of different wind fields,and the optimization effects of the guidance law are compared.The simulation results show that the standard deviation of the predicted wind speed is within 0.3,and the designed guidance law can control the end velocity within 15 m/s,with an impact error of less than 800 m,which is close to the landing point in a calm state.
关键词
自适应滤波/风场/制导律/倾侧角/再入飞行器/预测校正法/蒙特卡罗仿真/鲁棒制导率
Key words
adaptive filtering/wind field/guidance law/bank angle/re-entry vehicle/predictive correction meth-od/monte carlo simulation/robust guidance law
维普
万方数据