Time-energy efficient guidance strategy for a realistic 3D interceptor: An adaptive robust time-delayed control approach with input saturation

To achieve successful interception of a target by a missile with efficient time-energy utilization and robustness against external disturbances, a consolidated guidance approach has been proposed in this manuscript. Time-energy efficiency has been accomplished by employing Sine-Cosine algorithm to generate a near-optimal reference trajectory for the pitch and yaw heading angles. Thereafter, an adaptive robust time delayed controller has been designed to track the reference trajectory thus providing robustness towards uncertainties. To incorporate realistic aspect in the interceptor scenario, input saturation has been considered for the lateral acceleration of the missile. Stability analysis has been performed using a suitable Lyapunov function which proves Uniformly Ultimately Bounded (UUB) stability of the system through the proposed control approach. The efficacy of the proposed methodology has been verified through simulations involving various engagement scenarios. The simulation results demonstrate the superior tracking performance of the proposed method in the presence of time-varying disturbances.