Biased PNG with maximal-g barrel-roll for survivability enhancement of anti-ship missiles

In this paper, a guidance law for anti-ship missiles to enhance the survivability against ship-borne close-in weapon systems (CIWS) is investigated. As an evasive maneuver of the missile, a barrel-roll maneuver with a time-varying barrel-roll frequency is introduced. The barrel-roll frequency is determined to use all possible energy of the missile. The capturability of the proposed guidance law is proved by using the Lyapunov-like approach. Being compared with the biased PNG with a constant barrel-roll frequency, the proposed guidance law provided better evasion performance against CIWS.