Backstepping guidance law design for missile against maneuvering targets

A Backstepping guidance (BSG) law with saturating actuator is proposed for nonlinear kinematics of missile-target motion in the three-dimensional (3D) spherical coordinates system. The most important characteristic of Backstepping control (BSC) is high robustness. The proposed guidance law can reduce interception time and increase robustness in comparison with other guidance laws. In the proposed guidance outline, a Backstepping guidance law is designed to eliminate the effect of external perturbation. Then, it is illustrated that derived guidance law stabilize system. Some scenarios are considered for the engagement and simulated. Simulation results confirm above pretensions.