红外与毫米波学报2020，Vol.39Issue(2)：142-148,7.DOI:10.11972/j.issn.1001-9014.2020.02.002
非制冷IRFPA像元结构与时空随机噪声的优化理论
Optimal theoretical study of the pixel structure and spatio-temporal random noise of uncooled IRFPA
摘要
Abstract
The development of uncooled IRFPA pixel structure from a single-layer structure to a double-layerstructure reduces noise and improves performance. The pixel structure and its main physical parameters are intro-duced. It is noted that the main difference between the double-layer structure and the single-layer structure lies in the difference in the effective area of the pixel and thermal conductivity of the bridge leg. The 3-D noise model is an effective method to analyze IRFPA noise,in which spatio-temporal random noise is the main noise part of un-cooled IRFPA. The mechanism of spatio-temporal random noise in uncooled IRFPA is analyzed,and a spatio-temporal random noise model is established. The relationship between spatio-temporal random noise,the effec-tive area of the pixel,the thermal conductivity of the leg is obtained. An uncooled IRFPA with a single-layer pix-el structure is improved by changing it into a double-layer pixel structure,and the noise is measured. The mea-sured data proved the effectiveness of the uncooled IRFPA spatio-temporal random noise model.关键词
非制冷红外焦平面探测器/时空随机噪声/三维噪声模型/双层结构/微测辐射热计Key words
uncooled IRFPA/spatio-temporal random noise/3-D noise model/double-layer structure/microbolometer分类
信息技术与安全科学引用本文复制引用
冯涛,金伟其,司俊杰,张海军..非制冷IRFPA像元结构与时空随机噪声的优化理论[J].红外与毫米波学报,2020,39(2):142-148,7.基金项目
Supported by Key Projects of the National Natural Science Foundation of China(61231014),Doctoral Fund priority development project of Ministry of Education of China(20131101130002). （61231014）
