Abstract:In allusion to the problems that the mechanism of time stepping and object management techniques more applied to radar countermeasure analysis simulation lead to lower efficiency, a function interaction method of event - driven radar confrontation modeling is introduced. The method uses the event-driven mechanism and transforms the object interaction into functional interaction. In order to implement this method, the radar interaction function module and process are designed to balance the simulation granularity of the radar con-frontation module. The case of missile attack and defense is implemented using these modules in the ROSS simulation engine and the simulation results are basically consistent with the agent simulation, but the time is only 1 / 5 of the agent modeling and simulation,which proves the correctness and validity of the method and modules.