美国战区高空区域防御（ＴＨＡＡＤ）系统拦截导弹，选用动能杀伤器与来袭目标直接碰撞摧毁目标。动能杀伤器采用红外成像寻的器。文中将对其红外成像寻的器的战术技术性能及有关技术进行分析，对其关键技术的解决措施进行探讨。 The United States Theater Altitude Area Defense (THAAD) system to intercept missiles, the use of kinetic damage killer and hit the target directly to destroy the target. Kinetic killing device uses infrared imaging to find the device. In this paper, the tactical and technical performance of its infrared imaging seeker and its related technologies are analyzed, and the solution of its key technologies is discussed.