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多电容非制冷红外探测器动态范围调整技术
投稿时间:2018-03-26  修订日期:2018-03-30  点此下载全文
引用本文:魏新宇,赵航斌,张宁,孙德新.多电容非制冷红外探测器动态范围调整技术[J].红外,2018,39(5):1~7
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作者单位E-mail
魏新宇 中国科学院上海技术物理研究所 pbwxy@mail.ustc.edu.cn 
赵航斌 中国科学院上海技术物理研究所  
张宁 中国科学院上海技术物理研究所  
孙德新 中国科学院上海技术物理研究所 sundexin@mail.sitp.ac.cn 
基金项目:国家重点研发计划项目(2016YFC0803000)
中文摘要:针对非制冷红外焦平面阵列(Uncooled Infrared Focal Plane Array, UIRFPA)对多目标成像时动态范围有限的问题,基于探测器特性提出了一种根据目标调整动态范围的方法。积分前,根据所选目标初始成像的灰度分布实时调整电容;同时逐点配置像元偏压,以适应动态范围并完成非均匀性校正(Non-Uniformity Correction, NUC);依次实现局部目标的最佳成像效果。最后搭建了一种用于验证此方法可行性的红外成像系统。结果表明,本文方法实现了动态范围的实时调整,并获得了清晰的局部关键目标图像。由于解决了动态范围与目标不匹配的问题,该方法对非制冷红外成像系统在多目标场景下的拓展应用具有一定意义。
中文关键词:非制冷红外探测器  多目标  动态范围
 
Dynamic Range Adjustment Technique of Multi-capacitor Uncooled Infrared Detector
Abstract:To solve the dynamic range limitation of an Uncooled Infrared Focal Plane Array (UIRFPA) for imaging multiple targets, a method which can adjust dynamic range according to the target is proposed on the basis of the characteristics of the detector. Before integration, the capacitance is adjusted in real time according to the grayscale distribution of the selected target in an initial image. At the same time, the pixel bias is configured point by point to adapt the dynamic range and Non-Uniformity Correction (NUC) is conducted. Then, the best imaging effect of the locality of the target is achieved successively. Finally, an infrared imaging system for verifying the feasibility of the method is built. The results show that the proposed method can realize the real-time adjustment of dynamic range and obtain clear local key target images. Because the problem of mismatch between dynamic range and target is solved, it is of great significance to the application of uncooled infrared imaging system in multi-target scenario.
keywords:uncooled infrared detector  multi-objective scenario  dynamic range
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