【摘要】 由于非制冷式红外焦平面阵列的噪声等效温度NETD比较高 ,因此采用非制冷式红外系统的红外镜头的相对孔径都比较大 ,然而大相对孔径的红外镜头的重量和造价都有成倍的增加。采用非制冷式红外焦平面阵列研制红外侦察仪 ,作为单兵设备 ,需要在满足设备作用距离要求的前提下 ,满足整机重量的控制要求。文章从红外镜头的物象关系公式和热成像系统探测距离估算公式入手 ,通过深入分析非制冷热像仪成像所需的各种必需条件 ,并引入国际上流行的红外探测识别概率概念 ,针对红外侦察仪的使用特点和使用环境 ,分析计算配置侦察仪所需要红外镜头的各项参数 ,使得侦察仪整机达到最优效果。更多还原

【Abstract】 The relative aperture of the infrared camera lens on un-cooled infrared thermal system must be large, because of high NETD of IRFPA, but the infrared camera lens with large relatively aperture had higher weight and cost. Adopted IRFPA made up un-cooled infrared thermal scout system must be satisfied the requirements of detected distance and weight adapted to taken with single person. According to analyzing and calculating two of the detected distance formula, and introducing the concepts of detected and identified probability, the paper gets the best parameters of the infrared camera lens.更多还原