Optimal homing guidance law with autopilot dynamics

For maneuvering target interception, a new method for guidance law design is presented, which takes into account the autopilot dynamics, and is more realistic and effective. Instead of being determined in a single optimization problem, the interceptor strategy and target strategy are determined separately in two separate optimization problems. First, the target strategy is derived in a two-sided optimization problem that does not consider the interceptor's lag. The interceptor homing guidance law is then derived in a one-sided optimization problem that considers the interceptor's lag subject to the target strategy derived in the first optimization problem. Simulation results show that the proposed optimal guidance law can improve performance and requires low maneuverability by properly considering the autopilot lag.