基于环境温度的红外焦平面阵列非均匀性校正  

NONUNIFORMITY CORRECTION FOR INFRARED FOCAL PLANE ARRAYS BASED ON ENVIRONMENTAL TEMPERATURE

作　　者：白俊奇[1] 陈钱[1] 钱惟贤[1] 屈惠明[1] 王娴雅[1] 左超[1] 

机构地区：[1]南京理工大学近程高速目标探测技术国防重点学科实验室,江苏南京210094

出　　处：《红外与毫米波学报》2010年第1期49-52,共4页Journal of Infrared and Millimeter Waves

基　　金：国防预研项目(40405030103);江苏省自然科学基金重点项目(BK2008049);江苏省普通高校研究生科研创新计划资助项目(CX08B_045Z);近程高速目标探测技术国防重点科学实验室资助

摘　　要：分析了环境变化对红外焦平面阵列信号输出的影响,提出了一种基于环境温度和目标温度的非均匀性校正算法.利用UL01011凝视型红外探测器进行信号采集,根据最小二乘原理建立了焦平面探测单元的指数响应模型.最后,利用该模型进行非均匀性校正.实验表明,算法能在较宽的环境温度范围,准确预测焦平面探测单元的响应,有效提高了非均匀性校正的精度.Environmental influence on the signal output of infrared focal plane array （IRFPA） was analyzed. A nonuniformity correction （NUC） algorithm based on environmental and target temperatures was proposed. First, the original signal was captured by UL01011 staring infrared detector. Then, an exponential response model was established according to the principle of least square. Finally, nonuniformity was corrected by this model. Experimental results show that the proposed algorithm can give an exact response in a wider environmental temperature range and enhance effectively the precision of NUC.

关 键 词：红外焦平面阵列 非均匀性校正 环境温度 最小二乘 

分 类 号：TN911.73[电子电信—通信与信息系统]