Hierarchical Differential Game Output Feedback Control for Approaching Non-Cooperative Target

In this paper, we convert the non-cooperative target approach of multiple spacecrafts to hierarchical dynamic game problem. The proposed game model consist of a pursuer, a non-cooperative target and a cyber-attacker, where the pursuer wants to get close to the target with minimal fuel consumption by the help of the attacker. As such, hierarchical game is used to model the interaction of all participants and the optimal output feedback control strategies are derived by Stackelberg-Nash-saddle equilibriums. We also proved that for the worst case of attack-signal failure scenario the proposed algorithm is still effective. Finally, three simulation examples are provided to verify the validity of the proposed algorithm.