A Novel 3D Predefined-Time Convergence Guidance Law Against Maneuvering Targets
In this paper,a novel predeffined-time line of sight(LOS)angle rate convergence guidance law is proposed for the diverse engagements in three-dimensional(3D)scenarios.By using this guidance law,the LOS angle rate can be converged to zero in an arbitrarily prespecified time,which is independent of the initial conditions and control parameters.Besides,there exists an exact upper bound of the convergence time.Firstly,a planar guidance law is designed to introduce guidance commands in two-dimensional(2D)scenarios by decoupling the 3D engagement model.Then,the guidance commands can be functional in 3D scenarios by the theoretical analysis.Finally,simulations are implemented to validate the guidance law and show the effectiveness of proposed method.
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