Cooperative guidance law for heterogeneous missiles intercepting hypersonic weapon

To solve the cooperative interception problem of hypersonic weapons for multi-missiles, a cooperative guidance law based on leader-follower communication topologies for heterogeneous missiles is investigated. The leader missile is equipped with high-performance seeker to intercept the target under the modified proportional navigation guidance law. The follower missiles, not equipped with seekers, track the leader missile under the second-order consensus protocols by means of communication. Hitting the target at the same time, the two types of missiles form a several-for-one intercepting situation. The heterogeneous guidance strategy can reduce the needs for seekers, and has an ideal operational efficiency.The trajectories of the leader missile and follower missiles, which have better ballistic characteristics, derive from the modified proportional navigation guidance law. The sufficient conditions for the cooperative guidance law under the fixed topology and switched topology are presented. Numerical simulations demonstrate that the guidance law proposed could accomplish the cooperative interception of hypersonic target, and has a good feasibility.