Partial integrated missile guidance and control with state observer

This paper conducts a partial integrated guidance and control design for missile interception. With only the output available for feedback, a novel state observer is firstly proposed in the presence of unknown disturbances. The proposed observer reconstructs full system states in finite time. Interestingly, observer parameter is updated by an adaptive law. Then, a terminal sliding mode controller based on the proposed observer ensures the system states converge to zero in finite time, which is proved by the Lyapunov stability theory. The obtained result is applied to partial integrated guidance and control design of missile and hit-to-kill interception is achieved. Finally, a simulation example is presented, and a comparison to standard sliding mode observer is discussed to illustrate effectiveness of the proposed method.