Abstract:To improve the effectiveness of missiles against a maneuvering target with an impact angle fixed, a guidance strategy based on relative velocity vector control is proposed. A virtual relative motion coordinate system is established by motion vector synthesis, which transforms the problem of intercepting a maneuvering target under constant velocity into the problem of impacting a stationary target under time-varying velocity. Then a relative motion trajectory satisfying the relative heading angle constraint is designed based on a quadratic Bezier curve, and a trajectory tracking algorithm is employed to generate guidance commands to control the relative velocity vector. Simulation results verify the effectiveness and superiority of the proposed guidance law.