Abstract
To intercept stationary targets at desired impact angle, the three-dimensional terminal guidance problem has been investigated in this paper. Different from the traditional method of decoupling the engagement dynamics into two mutually orthogonal two-dimensional planes, the guidance law design is studied using three-dimensional coupled engagement dynamics. Because of the short terminal guidance time, the finite-time convergence guidance law is proposed in this paper on the basis of the fast nonsingular terminal sliding mode control theory, which guarantees finite-time convergence to the desired impact angle. Numerical simulations have demonstrated that the two guidance laws have effective performance and outperform the traditional terminal guidance laws.
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