Consensus Predefined-time Cooperative Interception Guidance Law for Multi Vehicles

A cooperative interception guidance law utilizing a leader-follower communication topology is presented in this paper. The guidance law is mainly designed in two parts respectively. In the first part, a fixed-time interception guidance law is designed to control the flight time. The guidance target is controlling the flight time of interception vehicles to reach consensus. A fixed-time disturbance observer is introduced to reduce the time-varying disturbance caused by the maneuver of the target. In the second part, we propose a cooperative guidance law with predefined-time consensus to realize cooperative interception to control the attack part. The stability of the consensus predefined-time cooperative interception guidance law is explained by Lyapunov theorem. Numerical simulation results are presented to show its superiority.