Preset-time Cooperative Interception Laws Against Maneuvering Targets

In the context of complex mission scenarios such as airport perimeter airspace protection and space debris removal, existing finite-time control methods, while accelerating convergence rates, remain constrained by initial system conditions. Large or unknown initial states lead to unpredictable convergence times that are difficult to regulate. To address these limitations, this paper proposes a novel distributed preset-time multi-missile cooperative interception approach. It overcomes the temporal performance limitations of current techniques and improves both target interception success rates and tracking efficiency. By designing the preset time control method specifically for the leader and follower missiles and constructing the preset time convergence sliding surface, the proposed method ensures that the residual intercept time consistency error of each missile converges to zero within the preset interval, enabling simultaneous interception of targets by multi-missile. The distributed architecture enhances system robustness and adaptability, offering significant theoretical and practical value for real-world applications.