基于声光可调谐滤波器的高光谱偏振红外焦平面非均匀性校正  

Non-uniformity Correction of Infrared Focal Plane Hyperspectral Polarization Based on Acousto-optic Tunable Filter

作　　者：张宇晶 张瑞[1,2] 王志斌[2] 吕泽 

机构地区：[1]中北大学信息与通信工程学院,太原030051 [2]山西省光电信息与仪器工程技术研究中心,太原030051

出　　处：《科学技术与工程》2017年第28期85-90,共6页Science Technology and Engineering

基　　金：国际科技合作项目(2013DFR10150)资助

摘　　要：针对在高光谱偏振成像系统中,由于红外面阵探测器CCD像元响应的不均匀性引起像素误差,提出了一种适于AOTF的高光谱偏振红外焦平面非均匀性校正的方法。采用积分球进行辐射定标,分析输出辐照度和像元响应的关系,提出了曲线拟合方法;此方法加快了运算速度并使得输出非均匀性减小了90%以上。根据实验结果对粗糙度进行对比分析,场景的粗糙度降低了20%以上,得到在单色光和复色光下粗糙度一致,解决了在高光谱全偏振成像时CCD对其造成的影响,从而使得光谱精度更高。Because the non-uniformity of tiie CCD pixel resj^onse caused by the non-uniformity of tiie infraredpixel array detector in the hyper-spectral imaging system, a n e w calibration algorithm method of non-uniformity cor-rection for high spectral polarized infrared focal plane array （ AOTF ） is proposed. Integral was use b a i to calibrate radiancy, analyzed the relationship between the output irradiance and the pixel response and proposed the curve fit -ting method. This method improves the response speed and reduces the output non-The comparative analysis of the roughness according to the experimental results, the scene roughness decreasedmore than 20% , the roughnes of monochromatic and polychromatic light are s a m e, it solves the influence of C C Dto hyper-sjDectral imaging in full polarization, which m a k e s the spectrum precision higher than before.

关 键 词：非均匀性校正 曲线拟合 高光谱全偏振 像元响应 

分 类 号：TN362[电子电信—物理电子学]