Abstract: To solve the nut of the rarity of real air targets,the radar operator training usually can not always be assured,for that the simulator are used to operation training is developing trend of equipment.But making use of simulation system to proceed operation training is another military technique revolution after the weapon automation.The system introduced here is regarding computer technique as the core.The model of radar’s echo signals is given,and the realization method is proposed.This realization employs computer to calculate radar echo data,and the key problems such as the real-time generation,control,and the display of targets are solved.The function simulation of the radar and operation training is realized;and the system has been used in training,which solves the problem of training.