ADRC based integrated guidance and control scheme for the interception of maneuvering targets with desired LOS angle

Based on the idea of the active disturbance rejection control (ADRC), an integrated guidance and control scheme is developed for the interception of maneuvering targets with the requested line-of-sight (LOS) angle. The ADRC based guidance law takes into account the nonlinearities and uncertainties involved both in the target kinematics and interceptor dynamics such that it can produce the acceleration which can realize the desired LOS angle even when the target is maneuvering. The ADRC based control law takes into account the nonlinearities and uncertainties existing in the motion dynamics such that the acceleration needed can be achieved. Furthermore, the capability of the proposed scheme is analyzed and the feasibility is tested by some simulations.