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弹道导弹为实现有效的突破反导防区而不被防御系统拦截，在其弹道中段和再入段采用了多种突防措施，以免受反导系统的搜索、跟踪和识别。反导系统对于来袭弹道导弹弹道中段及再入段的识别可以用微波雷达技术，也可用光学技术。文中主要讨论用红外光学技术设备，通过对目标的温度、辐射强度、红外热图的测量进行目标识别的原理和方法，给出了一些分析计算结果。
Ballistic missiles are not intercepted by the defense system in order to effectively break through the ABM zone. Various kinds of tactics are adopted in the middle and re-entry stages of ballistic missiles to avoid being searched, tracked and identified by the ABM system. The anti-missile system can use microwave radar technology or optical technology to identify the middle and reentry segments of incoming ballistic missiles. The paper mainly discusses the principle and method of target recognition with infrared optical technology and equipment, and through the measurement of target temperature, radiation intensity and infrared heat map, and gives some analysis and calculation results.