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.
出处
《应用光学》
CAS
CSCD
2004年第6期38-42,共5页
Journal of Applied Optics
关键词
最小可分辨温差
扫描系统
凝视系统
数学模型
噪声
minimum resolvable temperature difference(MRTD)
scanning system
staring system
mathematical model
noise
