Interacting Multiple Model Seeker Filter For Homing Guidance

In this paper, IMM based Augmented Extended Kalman Filter (IMM-AEKF) RF seeker filter is designed to operate in close loop homing guidance to track highly maneuvering Air Breathing Targets (ABT). The performance of the seeker filter is evaluated with six degree of freedom interceptor-target engagement simulation with seeker filter in closed guidance loop of the interceptor. Different filter performance criteria have been used to verify the performance of the seeker filter. Sensitivity/robustness of the seeker filter to various design parameters has been evaluated. IMM-AEKF was found to efficiently handle the various seeker noise and achieve miss distances that are acceptable for several realistic engagement scenario