针对目前缺少末敏弹单元红外探测系统识别判据研究的问题,提出了基于红外敏感器探测率的红外探测识别判据。推导出敏感器的探测率和探测视场内的目标幅射功率的乘积与探测信号信噪比的关系,并将其作为识别目标的判断依据。仿真表明,在探测率达到一定数值,且目标与背景存在+20 ℃以上的温度差条件下,即可实现对集群目标的探测和识别,真实反映敏感器对目标的探测识别能力,所得结果与实际测试相吻合,对今后末敏弹的红外探测研究具有一定的指导意义。

Aiming at the probem of lack of identifying criterion research for unitary infrared detection system of terminal sensitive projectile,an infrared detection identifying criterion based on the detection rate of infrared sensors is proposed. The relation between the product of the sensor’s detection rate and the target’s radiation power in the detected field of view and the signal-to-noise ratio of the detected signal is derived. It is used as the judgment basis for identifying the target. Simulation result shows that a cluster target can be detected and identified under the condition of the detection rate reaches a certain value and there is a temperature difference of more than 20 ℃ between the goal and the background,which can truly reflect the ability of the sensor’s detection and identification for armored target. The simulation results of using the criterion consistent with the actual test. It has a certain guiding significance for the infrared detection research of terminal sensitive projectile in the future.