摘要
利用大气后向散射几何模型,推导出后向散射的累积效应的近似表达式。计算结果表明,50m范围内的后向散射光占光学系统可接收到后向散射光通量的80%。针对近距离后向散射光的上述特点,提出了采用双通道光学接收系统处理后向散射光的方法。软件模拟结果证明,该方法具有较好的后向散射光抑制效果,系统结构设计简单、容易实现。
According to geometry model of the atmosphere back-scattering, an approximately expression of atmosphere back-scattering accumulative effect was deduced in this paper. The result showed that 80% of the backscattered flux of the receiver come from those particles inner 50 m away from the re- ceiver. Then, a new method of dealing with the backscattered light was presented by using a double passage optical receiver. The simulation result proved its good effects in improving image quality. The construction of the double passage receiver was simple and it can be easily realized.
出处
《液晶与显示》
CAS
CSCD
北大核心
2009年第1期126-129,共4页
Chinese Journal of Liquid Crystals and Displays
基金
国家“863”基金项目(No.2007AA122110)
国家自然科学基金项目(No.60507003)
中国科学院国防科技创新基金
关键词
主动成像
后向散射
分析和处理
active imaging
atmosphere back-scattering
analysis and treatment