Missile Guidance Law with Terminal Impact Angle Constraint

The correlation between terminal impact angle and expected angle of sight was analyzed to ensure impact angle of a missile.A guidance law with a terminal impact angle constraint was proposed based on Lyapunov stability theorem and estimation about time-to-go.The proposed guidance law is simple and overcomes the limitation that a passive homing missile does not has a distance-measurement function.Numerical simulation results demonstrate that the proposed guidance law can guide the missile to hit some mobile targets with high maneuverability by stem chase impact or perpendicular impact.