Improved MPSP Guidance Law Design for Achieving Expected Attack Time

In order to improve the saturation attack efficiency and cooperative penetration ability of missile, a guidance law with constraints on attack time and angle is designed for three-dimensional nonlinear guidance problems, based on an improved model predictive static programming (MPSP) method. By introducing the expected attack time in the objective function, the difference between the current terminal time and the expected terminal time is minimized. The display and analysis expressions of the time update parameter and the control update parameter are efficiently given. And then, the expected impact angle constraint can be achieved while achieving the expected terminal time. The simulation results show that the improved MPSP guidance method can meet the terminal time and angle constraints at the same time, with high calculation efficiency.