Cooperative Guidance Law with Prescribed-Time Convergence for Maneuvering Target

To ensure that multiple missiles hit the maneuvering target at different line-of-sight (LOS) angles simultaneously, the impact time errors and LOS angle errors of all missiles need to be eliminated before the missile hits the target. Therefore, a prescribed-time cooperative guidance law is proposed, in which the convergence time of state error can be predefined in advance. Based on the two-direction coordination strategy and prescribed-time stability principle, the impact time is consistent in the LOS direction, and the LOS angle constraint is satisfied in the normal LOS direction. Then, the stability and prescribed-time convergence are analyzed. Finally, the effectiveness of the proposed method is verified by numerical simulation.