被动式红外导引头是利用目标辐射的红外能量,给出目标相对导弹的偏差方位及偏差大小,并产生控制导弹飞向目标的控制信号。在红外导引头的技术指标中,灵敏阈是一个关键指标,它表征红外导引头对目标能够捕获和跟踪所需要的能量的大小。我们研制的某型红外导引头,灵敏阈指标一直存在较大问题,我们围绕灵敏 Passive infrared seeker is the use of target radiation infrared energy, given the target relative to the deviation of the missile azimuth and size, and control signals generated by the missile to fly to the target. Sensitivity thresholds are a key indicator of the infrared seeker’s specifications, which characterize the amount of energy the infrared seeker needs to capture and track the target. We developed a certain type of infrared seeker, sensitive threshold indicators there has always been a big problem, we focus on the sensitive