Two-Stage Game Guidance Strategy With Impact Point for Active Defense Aircraft in Two-on-Two Engagement

A two-stage game guidance strategy is designed in this article using the optimal control method in a two-on-two engagement scenario, which consists of a defender (low-value aircraft), a target (high-value aircraft), and two attackers. The probability of the attackers intercepting the target is assumed to devise an impact point in the engagement. The greater the probability, the closer the impact point is to the attacker. Therefore, the engagement is divided by the impact point into two stages. The first stage is a three-player confrontation between the defender, the target, and the impact point, where the defender remains on the line-of-sight between the target and the impact point. The defender is closer to the attacker by pursuing the impact point to increase the success rate of combat. For the second stage, the defender intercepts the attacker posing the greatest threat to the target at the desired terminal angle while the target adopts an optimal avoidance strategy. Simulations are performed to verify the effectiveness and feasibility of the guidance strategy.