微光成像系统视距理论公式的修正  

The Revised Formula for Visual Range of Low Light Level Imaging System

作　　者：刘磊[1] 常本康[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《光学学报》2003年第6期761-765,共5页Acta Optica Sinica

摘　　要：介绍了微光成像系统视距理论的基本概念 ,在对微光成像系统视距探测方程推导的基础上 ,分析了各参量间的关系及其对整体性能的影响 ,从大气透过率和光谱匹配等诸多方面进行修正 ,建立了更为实用和完善的视距探测方程 ,并结合车辆驾驶夜视仪进行了视距估算 ,验证了经修正后的视距公式的实用性 ,为微光成像系统的优化设计以及寻求实现中远距离观察的最优技术途径提供了理论帮助 ,这对微光成像系统的改进、提高和发展也具有一定的指导意义。最后提出了一些改进微光成像系统视距性能的途径。The fundamental conception about visual range of low light level (LLL) imaging system is described. Based on the common apparent distance detecting equation, a more practicable and reliable detecting equation is established by using the factors, such as atmospheric transmissivity, spectral matching factor, etc. The relations of parameters, which have an influence on performances of system, are analyzed. The visual range of the night vision goggle under the specific circumstance is estimated which proves the revised apparent distance detecting equation is effective and the design of the system is feasible. Some approaches to improve the LLL imager′s performance are presented.

关 键 词：微光成像系统 视距探测方程 光谱匹配系数 大气透过率 空间频率 

分 类 号：TN223[电子电信—物理电子学] TP802.5[自动化与计算机技术—检测技术与自动化装置]