A method for precision missile guidance with impact attitude angle constraint

A new guidance law is presented for the impact angle control problem. It can achieve zero miss distance and any desired impact attitude angle simultaneously. The guidance law does not require a time-to-go estimation and information of the range to the target. It attains a perfect intercept (zero miss distance and zero impact angle error) against nonmaneuvering targets under certain ideal conditions. In addition, it is shown that the acceleration command converges to zero at the impact time, which is beneficial to the weapon systems with penetrator warheads. The simulation results show that the new guidance law performs better compared with other two laws from the literatures for the impact angle control problem.