Abstract: The radiation simulation system for IR acquisition and tracking device were introduced based on the DMD dynamic infrared scene projector. The optical principle of the DMD projector was introduced. The requirements and methods of the optical matching between the DMD projector and system under tested were analyzed. The time modulation of the DMD projector was introduced, and the requirements and methods of the synchronization between the DMD projector and system under tested were analyzed. The factors which influence on the energy transmission between DMD projector and system under tested were analyzed, and the methods of calibration and energy matching between DMD projector and system under tested were analyzed. The experiments were carried out for certain IR acquisition and tracking device using the simulation system, and some performance of the device were simply assessed.