热成像系统MRTD数学模型的研究  

Research of the MRTD Mathematical Model for Thermal Imaging System

作　　者：李旭东[1] 艾克聪[1] 张安锋[1] 

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2004年第6期38-42,共5页Journal of Applied Optics

摘　　要：　通过研究热成像系统MRTD数学模型发展的历史及成果,推演和变换了最具代表性的10种最小可分辨温差方程,研究分析了各方程之间的内在联系和异同,从而在匹配滤波模型的基础上推导出新的MRTD方程。经理论推导发现建立起来的模型通过近似推导能推导出最具代表性的斯科特方程、罗切斯方程和劳埃德方程。新建立起的方程不仅消除了太多的取样近似,完整描述了三维噪声,而且在眼/脑空间积分中包括了扫描效率和过扫比的影响。The history and achievements on the minimum resolvable temperature difference(MRTD) mathematical model are researched. The most representative ten kinds of MRTD equations are transformed and deduced. The inherent relations and difference of these equations are analyzed. Based on the match filtering model,the new MRTD equation,in which the too much approximately sampling is eliminated, three dimension noise model has been described completely,and the effect of scan effenciency and over scan ratio has been included in the spatial integral of eye/brain,is deduced.

关 键 词：最小可分辨温差 扫描系统 凝视系统 数学模型 噪声 

分 类 号：TN21-34[电子电信—物理电子学]