紫外像增强器信噪比测量技术  

Measurement of Signal to Noise Ratio of UV Image Intensifier Assembly

作　　者：拜晓锋 张磊 闫士君 钱芸生[5] 张琴 苏悦 程宏昌 成伟 李琦 BAI Xiaofeng;ZHANG Lei;YAN Shijun;QIAN Yunsheng;ZHANG Qin;SU Yue;CHENG Hongchang;CHENG Wei;LI Qi(Science and Technology on Low-Light-Level Night Vision Laboratory,Xi'an 710065,China;Kunming Institute of Physics,Kunming 650223,China;Unit 63963 of the People's Liberation Army,Beijing 100072,China;Yunnan North Optical&Electron Instrument Co.,Ltd.,Kunming 650114,China;Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]微光夜视技术重点实验室,陕西西安710065 [2]昆明物理研究所,云南昆明650223 [3]中国人民解放军63963部队,北京100072 [4]云南北方光电仪器有限公司,云南昆明650114 [5]南京理工大学,江苏南京210094

出　　处：《红外技术》2024年第11期1302-1307,共6页Infrared Technology

摘　　要：为了实现对紫外像增强器信噪比的准确测量,建立了信噪比测量装置。首先,基于紫外像增强器的工作原理,结合已有微光像增强器信噪比测试方法,测算了紫外像增强器信噪比测试所需要的入射辐射功率;其次,从紫外波段参数测量的量值传递性出发,提出了基于测算辐射强度小光点成像探测的紫外像增强器输出信噪比测试方法;然后,基于确定辐射强度小光点成像探测方法建立了紫外像增强器信噪比测试装置,并分析了该装置的测量不确定度;最后,利用校准后的测试装置测量了某型紫外像增强器的信噪比,得到了较高的测量重复性。结果表明,采用基于确定辐射强度小光点成像探测方法的紫外像增强器输出信噪比测试装置的不确定度为13.3%,利用该装置测试得到的紫外像增强器信噪比结果为15.3,测量结果的重复性偏差为2.86%,满足了紫外告警等应用场景对高信噪比紫外像增强器的测量要求。To comprehensively evaluate the performance of a UV image intensifier,a testing apparatus was established for measuring the signal-to-noise ratio of the UV image intensifier assembly.First,according to the working principle of the UV image intensifier and the method used to test the SNR of the low-light-level image intensifier,the incident radiation power required to measure the SNR of the UV image intensifier was calculated.Second,based on the measurement of the ultraviolet wavelength parameters,a method for testing the signal-to-noise ratio(SNR)of the UV image intensifier with a small-spot imaging detection is proposed.Subsequently,based on the detection method of small-spot imaging for determining the radiation intensity,an SNR measurement device was established for the UV image intensifier,and the measurement uncertainty of the device was analyzed.Finally,the SNR of the ultraviolet image intensifier was measured using a calibrated test device,and the measurement repeatability was high.The results showed that the uncertainty of the UV image intensifier SNR test device based on the detection method of small-spot imaging with the determined radiation intensity was 13.3%,the SNR of the UV image intensifier was 15.3,and the repeatability deviation of the SNR was 2.86%.This satisfies the measurement requirements of UV image intensifiers with a high SNR in ultraviolet alarms and other application scenarios.

关 键 词：光电探测 日盲紫外 像增强器 信噪比 光电测量 

分 类 号：TN144[电子电信—物理电子学]