Prescribed-time cooperative guidance law against maneuvering target based on leader-following strategy.

This paper proposes a prescribed-time cooperative guidance law (PTCGL) against maneuvering target with variable line-of-sight (LOS) angle constraint for leader-following missiles, where the convergence times of the state errors can be arbitrarily set. The leader missile against the maneuvering target is provided as the modified proportional navigation (MPN) guidance law. The proposed PTCGL for follower missiles consist of two parts, in LOS direction, the range-to-go (Rgo) is selected as a co-variable, avoiding the estimation of time-to-go (Tgo), and a novel second-order nonlinear consensus protocol is developed to design the PTCGL; in normal LOS direction, considering the variable LOS angle constraint, the cooperative guidance law is designed with the proposed prescribed-time sliding model control (PTSMC) method. Besides, the prescribed-time convergence of Rgo and LOS errors are proved. Finally, the effectiveness and superiority of the proposed PTCGL with leader-following strategy is illustrated by numerical simulation results. • The convergence time of the cooperative guidance law can be set arbitrarily. • The multi-missile surrounding attack was achieved without pre-setting the desired LOS angle. • The Range-to-go was selected as a co-variable to design the cooperative guidance law. • A prescribed time convergence sliding mode method was developed to design the cooperative guidance law. [ABSTRACT FROM AUTHOR]