Active homing performance enhancement with multiple model radome slope estimation

Abstract In this paper, a new filter structure with the interacting multiple model (IMM) algorithm for estimating both the radome slope and target states is suggested to reduce the radome induced miss distance effectively in active homing engagements of a surface-to-air missile. The proposed filter in conjunction with proportional navigation guidance is tested by a series of simulation runs in three-dimensional engagement scenarios. Simulation results show that the proposed filter structure stabilizes the missile system and gives allowable miss distance in case of large incident lag that may cause system instability in the presence of the radome slope.