BIASED PNG LAW FOR IMPACT WITH ANGULAR CONSTRAINT

A new homing guidance law is proposed to impact a target with a desire d attitude angle. It is a variation of the conventional proportional n avigation guidance (PNG) law which includes a supplementary time-varyi ng bias. The proposed guidance law does not require a time-to-go estim ation and has a simpler form, Analytic conditions for fulfilling the g uidance goal are also provided. Simulation results demonstrate that th e proposed guidance law has wider launch envelopes than the previous o ne and shows a good performance even against a maneuvering target.