Robust guidance law for space interception

In space interception, a linear time-varying model is established to describe the missile-target related line-of-sight (LOS) motion, where the guidance parameter variations and target maneuvers are regarded as gain bounded disturbances. From this model, a robust guidance law of homing-missile is derived and its robustness against the gain bounded uncertainty is proved by Lyapunov-like approach. Simulation results obtained demonstrate the effectiveness of the presented guidance method.