红外与激光工程, 2003, 32 (3): 309, 网络出版: 2006-04-28
长波红外相机细分采样迭加像元传递函数分析
Analysis of oversample-superposition pixel transfer function with long wave IR camera
摘要
根据长波红外探测器的特点,阐述了细分采样迭加技术的应用目的和原理,在像元传递函数(PTF)的基础上分析细分采样和迭加对PTF的影响,给出了不同细分倍数m对应的细分采样迭加PTF.随着m的增加,推扫采样方式由单次瞬时采样(m=1)转变为全驻留时间积分采样(m趋于无穷大).当细分倍数m>4时,PTF的变化已经不明显了.
Abstract
The principle and application purpose of oversamplesuperposition technique are discussed based on the characteristics of long wave IR detector. The effects of oversample and superposition are analyzed on the basis of PTF, and the corresponding oversamplesuperposition PTFs at different division multiples (m) are given. As m is increased, the pattern of pushingtype scan sample is varied from instantaneous single sample (m=1) to integral sample at full residence time (m is tended towards infinity). The variation of PTF is not distinct when m>4.
张滢清, 傅雨田, 王建宇. 长波红外相机细分采样迭加像元传递函数分析[J]. 红外与激光工程, 2003, 32(3): 309. 张滢清, 傅雨田, 王建宇. Analysis of oversample-superposition pixel transfer function with long wave IR camera[J]. Infrared and Laser Engineering, 2003, 32(3): 309.