红外焦平面阵列非线性校正曲线测量方法
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摘要
针对红外焦平面阵列强度响应的非线性失真现象,本文提出了一种基于单波长激光器测定红外焦平面阵列非线性校正曲线的方法,设计出用于测量的实验装置,并通过实验研究获得了实测的非线性校正曲线。结果表明,该方法规避了红外焦平面阵列光谱响应不均匀性的影响,满足了装置器件在工程技术中通用性和实用性的需要,在简单易行的同时保证了较高的测量精度。
As for the nonlinear effects of infrared focal plane arrays intensity response,a nonlinear calibration method is proposed based on single wavelength laser. Experimental equipment is designed for measuring,and the nonlinear calibration curve of the focal plane array is obtained through the measuring equiprment. Experimental results show that this method aviods the influence of infrared focal plane arrays spectral response nonuniformity,and meets the requirement of generality and practicability of the device in the engineering technology,which ensures the high accuracy of measurement as well as simpleness.
As for the nonlinear effects of infrared focal plane arrays intensity response,a nonlinear calibration method is proposed based on single wavelength laser. Experimental equipment is designed for measuring,and the nonlinear calibration curve of the focal plane array is obtained through the measuring equiprment. Experimental results show that this method aviods the influence of infrared focal plane arrays spectral response nonuniformity,and meets the requirement of generality and practicability of the device in the engineering technology,which ensures the high accuracy of measurement as well as simpleness.
引文
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[2]李恩德,段海峰,杨泽平,等.电荷藕合器件光电响应特性标定研究[J].强激光与粒子束,2006,18(2):227-229.LI E D,DUAN H F,YANG Z P,et al..Method of calibrating CCD optics-electron characteristic[J].High Power Laser and Particle Beams,2006,18(2):227-229.(in Chinese)
[3]曹扬,金伟其,刘崇亮,等.红外焦平面阵列的自适应非均匀性校正及硬件实现[J].光学精密工程,2011,19(12):2985-2991.CAO Y,JIN W Q,LIU CH L,et al..Adaptive nonuniformity correction and hardware implementation of IRFPA[J].Opt.Precision Eng.,2011,19(12):2985-2991.(in Chinese)
[4]李博翰,于晓梅.电容读出式非制冷红外焦平面阵列设计[J].光学精密工程,2011,19(4):762-767.LI B H,YU X M.Design of capacitive-read infrared FPA[J].Opt.Precision Eng.,2011,19(4):762-767.(in Chinese)
[5]代少升,张新立.利用单片可编程系统对红外焦平面阵列进行实时非均匀性校正[J].光学精密工程,2009,17(4):854-858.DAI SH SH,ZHANG X L.Real-time nonuniformity correction of infrared focal plane arrays by system on programmable chip[J].Opt.Precision Eng.,2009,17(4):854-858.(in Chinese)
[6]刘明华,余模智,何平安,等.线阵CCD采集系统的非线性度测量[J].武汉测绘科技大学学报,1996,21(4):399-402.LIU M H,YU M ZH,HE P A,et al..The research of measuring nonlinear scale of linear CCD sampling and collecting system[J].J.Wuhan Technical University of Surveying and Mapping,1996,21(4):399-402.(in Chinese)
[7]侯婷,顾国华,陈钱.基于FPGA的红外焦平面成像条纹噪声逐帧抑制算法的研究[J].光学与光电技术,2012,10(6):77-81.HOU T,GU G H,CHEN Q.Strip noise suppression algorithm of infrared focal plane imaging frame by frame based on FPGA[J].Opt.Optoelectronic Technology,2012,10(6):77-81.(in Chinese)
[8]黄竹邻,柳刚,何兆湘,等.基于反中值滤波的红外焦平面自适应非均匀性校正方法[J].光学与光电技术,2005,3(3):62-64.HUANG ZH L,LIU G,HE ZH X,et al..Adaptive nonuniformity correction based on inverted median filtering of infrared focal plane[J].Opt.Optoelectronic Technology,2005,3(3):62-64.(in Chinese)
[9]代少升.红外焦平面阵列非均匀性非线性校正新方法[J].光电工程,2008,35(4):121-125.DAI SH SH.New method of IRFPA nonuniformity correction with nonlinear response[J].Opto-Electronic Eng.,2008,35(4):121-125.(in Chinese)
[10]李宁,杨词银,曹立华,等.3~5μm红外焦平面阵列的辐射定标[J].光学精密工程,2011,19(10):2319-2325.LI N,YANG C Y,CAO L H,et al..Radiance calibration for 3~5μm infrared focal plane array[J].Opt.Precision Eng.,2011,19(10):2319-2325.(in Chinese)
[11]张云峰.基于加权最小二乘法的红外辐射定标[J].液晶与显示,2012,27(6):832-836.ZHANG Y F.Radiance calibration based on weighted least square method[J].Chinese J.Liquid Crystals and Displays,2012,27(6):832-836.(in Chinese)