摘要
在地基上用可见光CCD成像仪观测夜间天空被太阳光照明的飞行目标,目的是研究目标在飞行过程中的辐射特性(辐强度和辐亮度),并配合经纬仪确定方位和轨迹。CCD成像仪的信噪比是限制对目标探测的一个重要因素,也是衡量相机成像性能的重要指标。分析了典型太阳照明条件下设定参量CCD成像仪的信噪比,并得出典型信噪比与探测距离、光学系统有效入瞳直径的关系,为实用系统的设计提供了依据。
Visible CCD imager can be used for observing flying target illuminated by sunlight at night from ground.The purpose of this article is to study radiative characteristics(radiant intensity and radiance) of flying target,and to determine its position and track cooperating with theodolite.This paper analyzed signal-to-noise ratio of a CCD imager which parameters are given under typical condition illuminated by sunlight,and provided some evidence for designing applied system.
出处
《光学技术》
CAS
CSCD
北大核心
2007年第S1期162-163,共2页
Optical Technique
