便携式红外目标模拟器系统设计  

Design of portable infrared target simulator system

作　　者：高宏伟[1] 杨忠明 刘红波 庄新港 刘兆军[2] Gao Hongwei;Yang Zhongming;Liu Hongbo;Zhuang Xingang;Liu Zhaojun(Key Laboratory of Laser&Infrared System,Ministry of Education,Shandong University,Qingdao 266237,China;School of Information Science and Engineering,Shandong University,Qingdao 266237,China;East China Institute of Electronic Measurement Instrument,Qingdao 266555,China)

机构地区：[1]山东大学激光与红外系统集成技术教育部重点实验室,山东青岛266237 [2]山东大学信息科学与工程学院,山东青岛266237 [3]华东电子测量仪器研究所,山东青岛266555

出　　处：《红外与激光工程》2023年第3期264-272,共9页Infrared and Laser Engineering

基　　金：国家自然科学基金(62175131);装备预研教育部联合基金(8091B032125);安徽省重点研究与开发计划(202104a04020001);山东大学基本科研业务费资助项目(2020JCG003)。

摘　　要：为了满足光电探测设备对不同温度环境下多波段的目标模拟需求,设计了一种便携式红外目标模拟器,选用可切换的黑体光源来进行照明,实现3~5μm和8~14μm的中波红外和长波红外的辐射特性。作为准直系统的平行光管口径为110 mm,考虑到中心遮挡问题,采用离轴反射式光学结构。在装调时利用该结构对300 mm口径的参考平面镜进行测量,测试结果PV值为0.356λ(λ=632.8 nm),RMS值为0.047λ。采用MSC.Patran进行建模,利用有限元分析方法完成了系统的光机热分析,在-10~50℃工作环境下,由温度变化引起的主次镜面形变化为纳米级别,对中红外波段可实现实时稳定成像,为光电探测设备提供宽波段的多种直接模拟目标。Objective Infrared target simulator is an important part of infrared target simulation experiment.When the outgoing pupil of the collimation system coincides with the incident pupil of the detection equipment,it can provide a stable infinitely far simulated target for infrared detection equipment,and the simulation results have the advantages of being accurate,controllable and repeatable experiments,which are used to evaluate the performance and accuracy of infrared detection equipment.It has important applications in radar testing,infrared guidance,infrared tracking,etc.With the development of photoelectric detection equipment sensor integration and miniaturization,multi-band sensors have become the standard configuration of most photoelectric detection equipment.Due to the changes in the debugging environment and the use of the environment,it is necessary to adjust it frequently,but most of the target simulators in the laboratory are only equipped with a single-band light source,large size is not convenient to carry.Therefore,it is necessary to establish multi-band and small-sized portable target simulators to meet the needs of different usage environments.For this purpose,an off-axis reflective infrared target simulator system is designed in this paper.Methods A portable infrared target simulator system is built in this paper.A 110 mm aperture parallel light tube of reflective structure was chosen as the collimation system(Fig.2).The optical-mechanical thermal integration analysis of the system was performed to determine the deformation variation of the primary and secondary mirrors and mechanical structure caused by temperature difference(Fig.8).The self-collimating interferometric detection method was mounted using a Zygo interferometer(Fig.11),and the mounting results were judged by the PV and RMS value results of the face shape measurement of the standard plane mirror(Fig.13).Results and Discussions The portable infrared target simulation system was mounted using self-collimating interferometry,with PV val

关 键 词：光学工程 目标模拟器 光学设计 平行光管 

分 类 号：TN216[电子电信—物理电子学] TG502.33[金属学及工艺—金属切削加工及机床]