基于增强型CCD探测器的距离选通三维成像不均匀性补偿方法  

Compensation Method for Range-Gated 3D Imaging Inhomogeneity Based on ICCD Detector

作　　者：孙磊 金东东 纪春恒 裴崇雷 安鸿波 段恩悦 SUN Lei;JIN Dongdong;JI Chunheng;PEI Chonglei;AN Hongbo;DUAN Enyue(Shandong Institute of Space Electronic Technology,Yantai 264670,Shandong,China)

机构地区：[1]山东航天电子技术研究所,山东烟台264670

出　　处：《兵工学报》2023年第8期2495-2502,共8页Acta Armamentarii

基　　金：自然资源部-山东省十三五创新示范城市产业项目(YHCX-ZB-L-202002);烟台市科技创新发展项目(2020JRH007);中国航天科技集团公司自主研发项目(2021397)。

摘　　要：距离选通三维成像是一种非扫描三维成像技术,一般利用增强型CCD(ICCD)探测器的纳秒级快门时间特性,实现光子飞行时间选通成像。在远距离测绘、水下测量、复杂环境下目标识别等领域具有重要应用价值。由于器件工艺的原因,实际ICCD探测器快门经常存在开关时间不同步的现象,导致距离选通三维成像测量存在严重的不准确性。基于ICCD探测器固有的开门时间特性,通过测试得到不同器件的距离误差矩阵,提出一种距离选通三维成像不均匀性补偿方法。研究结果表明:所提方法可以有效降低距离选通三维成像误差,提高实际测量精度,具有很好的工程应用价值。Range-gated 3D imaging is a non-scanning technology that utilizes nanosecond shutter time characteristics of Intensified CCD(ICCD)detectors to achieve photon time-of-flight gated imaging.It finds valuable applications in long-distance surveying,underwater measurement,and target recognition in complex environments.Due to device technology limitations,there is often a phenomenon of asynchronous switching time in the actual ICCD detector shutter,resulting in serious inaccuracies in range-gated 3D imaging measurements.Based on the inherent gate opening time characteristics of ICCD detectors,a distance error matrix of different devices is obtained through testing,and a range-gated 3D imaging non-uniformity compensation method is proposed.The research results indicate that the proposed method can effectively reduce range-gated 3D imaging errors,improve the actual measurement accuracy,and have good engineering application value.

关 键 词：增强型CCD 距离选通 三维成像 时间不均匀性 

分 类 号：TN249[电子电信—物理电子学]