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山东航天电子技术研究所, 山东 烟台 264670
Received:01 April 2022,
Published Online:06 September 2023,
Published:30 August 2023
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Lei SUN, Dongdong JIN, Chunheng JI, et al. Compensation Method for Range-Gated 3D Imaging Inhomogeneity Based on ICCD Detector[J]. Acta Armamentarii, 2023, 44(8): 2495-2502.
Lei SUN, Dongdong JIN, Chunheng JI, et al. Compensation Method for Range-Gated 3D Imaging Inhomogeneity Based on ICCD Detector[J]. Acta Armamentarii, 2023, 44(8): 2495-2502. DOI: 10.12382/bgxb.2022.0219.
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.
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拜晓峰 , 程宏昌 , 何开远 , 等 . 微光像增强器积分灵敏度单次测量误差分析 [J ] . 应用光学 , 2020 , 41 ( 4 ): 791 - 795 . DOI: 10.5768/JAO202041.0404001 http://doi.org/10.5768/JAO202041.0404001 为了提高批量微光像增强器性能参数的测试速度,通常采信单次测试数据作为测量结果。在该情况下,参数单次测量结果的误差将直接决定性能评价结果的准确性。以微光像增强器积分灵敏度的参数测试为例开展单次测量误差评定,通过对微光像增强器积分灵敏度的测试方法、测量装置、数据计算等误差情况进行综合分析,计算得到的积分灵敏度单次测量最大误差为6.7%;在该基础上,提出了采用更高加工精度光阑、对入射光测量位置进行修正以及阶段性辅助参量重复性测量校对的积分灵敏度单次测量误差控制方案。研究结果对微光像增强器批量化快速测试具有重要的指导意义和参考价值。
BAI X F , CHENG H X , HE K Y , et al . Single test error analysis for integral sensitivity of low-light-level image intensifier [J ] . Journal of Applied Optics , 2020 , 41 ( 4 ): 791 - 795 . (in Chinese) DOI: 10.5768/JAO202041.0404001 http://doi.org/10.5768/JAO202041.0404001 In order to improve the test speed of performance parameter for lot size of low-level-light (LLL) image intensifiers, the single test data is usually used as the measurement result. In this case, the error of parameter single test result will directly determine the accuracy of the performance evaluation result. The parameter test of integral sensitivity for LLL image intensifiers was taken as an example to evaluate the single test error. Based on the comprehensive analysis of the errors of test method, measuring device, data calculation and so on for the integral sensitivity of LLL image intensifiers, the single test maximum error of integral sensitivity was calculated to 6.7%. On this basis, the single test error control scheme of integral sensitivity using a diaphragm with higher processing accuracy, corrected incident illuminance measurement position, and stage auxiliary parameter repeatability measurement calibration was proposed. The research results have important guiding significance and reference value for the rapid test of lot size of LLL image intensifiers.
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