论红外探测系统的噪声等效温差  

On the Noise Equivalent Temperature Difference of Infrared Detection System

作　　者：王忆锋[1] 谈骥[1] 

机构地区：[1]昆明物理研究所,云南昆明650223

出　　处：《红外》2014年第6期1-9,共9页Infrared

摘　　要：介绍了基于噪声等效温差(Noise Equivalent Temperature Difference,NETD)定义的NETD公式推导过程,讨论了相关系统参数对NETD的影响。然后分析了环境温度变化对NETD的影响,并给出了相同辐射功率差所对应的等效温差的MATLAB计算方法。The derivation process of Noise Equivalent Temperature Difference （NETD） based on the definition of NETD is presented. The influence of related system parameters on NETD is discussed. Then, the influence of the variation of ambient temperature on NETD is analyzed. Finally, the MATLAB method for calculating the equivalent temperature difference corresponding to the same radiant power difference is given.

关 键 词：噪声等效温差 温度分辨率 热灵敏度 红外成像系统 

分 类 号：TN215[电子电信—物理电子学]