Field-of-View Constrained Cooperative Guidance Law for Simultaneous Attack with Multiple Missiles

In this paper, a cooperative guidance law based on an undirected communication graph is presented, which can keep the target within a narrow field-of-view (FOV) all the flight time and achieve simultaneous attack against stationary targets without access to global information. To maintain the seeker's lock-on condition, this paper considers the real look angle without neglecting the additional sideslip angle caused by wind turbulence. However, when the missile's speed exceeds a certain value, the additional sideslip angle will be small enough to be neglected and this value is derived. Based on the derived value, the guidance law is adaptive to switch its structure between FOV constrained sliding mode control guidance law and proportional navigation guidance (PNG) law, which can achieve zero miss distance with terminal command converging to zero, theoretically. Numerical simulations are conducted and the results prove the proposed law's validity.