带速度及视线角约束的大机动目标协同制导律

A novel three-dimensional cooperative guidance law with velocity and line-of-sight constraints is proposed for multiple missiles to solve the problem of attacking large maneuvering targets simultaneously. Based on the missile-target relative engagement geometry in the line-of-sight frame,a multi-missile cooperative guidance model with line-of-sight(LOS)angle constraints is constructed. Applying the second-order consensus algorithm with velocity constraints,a fully distributed guidance law for salvo attack is designed along the LOS direction. On one hand,the time-to-go deviations between multiple missiles are thoroughly eliminated in theory. On the other hand,one can take the initiative to adjust the common impact time by changing the velocity constraints. Considering the uncertain interference along the normal direction of LOS,the guidance law with LOS angle constraints is proposed based on adaptive robust control methods and non-singular fast terminal sliding mode surfaces,which effectively overcomes the LOS angle errors caused by large maneuvering of the target. Finally,numerical simulations and contrastive analysis are conducted to verify the effective and superiority of the proposed guidance law.