In this work, a new nonlinear guidance law with finite-time convergence considering control loop dynamics is developed to intercept highly maneuvering targets. The approach is based on integral sliding mode combined with finite-time state feedback control. Since terminal guidance process occurs in a short time, the line-of-sight (LOS) angular rate should converge to zero in a finite time. The proposed guidance scheme successively guides the LOS angular rate to converge to zero in a finite-time, and stability and robustness of the new guidance law are demonstrated by means of Lyapunov stability theorem. Three-dimensional simulation results demonstrate the performance of the proposed design procedure.

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