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Data processing technique applied to the calibration of a high performance FPA infrared camera

机译：数据处理技术应用于高性能FPA红外摄像机的校准

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The present work deals with the calibration of a focal plane array infrared camera whose detector is a matrix of 320 x 244 PtSi sensors active in the range 3.6-5 mum. The calibration curve has been obtained by measuring the energy emitted by a blackbody, consisting in a copper cylindric cavity with isothermal walls. The results, obtained in the temperature range 10-70 degreesC, enable us to investigate the nature of the noise which affects the measurements. The aim is to suggest a data processing and a calibration technique in order to enhance the image quality and the instrument response as well. The effects of random uncertainties have been reduced by using Wiener filtration, which enables us to improve the signal to noise ratio. The problem caused by the nonuniform response of the detector array has been handled by using a different calibration curve for each sensor. The effectiveness of this procedure has been checked by comparing the frequency histograms of the raw and the processed signal. The investigation enables us to highlight some peculiar features of the new focal plane array technology employed in the new generation infrared cameras. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 10]
机译：本工作涉及焦平面阵列红外摄像机的校准，该摄像机的探测器是在3.6-5微米范围内有效的320 x 244个PtSi传感器矩阵。通过测量黑体发出的能量获得校准曲线，该黑体位于带有等温壁的铜圆柱腔中。在10-70摄氏度的温度范围内获得的结果使我们能够研究影响测量的噪声的性质。目的是提出一种数据处理和校准技术，以提高图像质量和仪器响应。通过使用维纳滤波可以减少随机不确定性的影响，这使我们能够改善信噪比。通过对每个传感器使用不同的校准曲线，可以解决由检测器阵列响应不均匀引起的问题。通过比较原始信号和已处理信号的频率直方图，检查了此过程的有效性。通过调查，我们可以重点介绍新一代红外摄像机采用的新焦平面阵列技术的一些特殊功能。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：10]

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