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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2003年第6期761-765,共5页
Acta Optica Sinica
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
LLL night vision system
apparent distance detecting equation
spectral matching factor
atmospheric transmissivity
