摘要
降水粒子识别在天气现象的自动观测、人工影响天气及天气雷达定标等领域有重要应用。针对降水粒子的形状测量,总结了两种成像探测仪器的原理、主要技术指标、功能及应用情况;提出一种基于线阵CCD的降水粒子狭缝摄像方法,分析了CCD对降水粒子的线扫描过程及粒子形状获取过程;构建了降水粒子测量的光学系统,成像系统采用远心光路以提高测量精度,照明系统采用克拉照明以获得均匀照明;最后分析了待解决的问题.
Raindrop identification is important in automated weather observations,weather radar calibration and other related research areas.As to measurement of raindrop shape,two-dimensional video disdrometer's principle,main technical parameter,function and application are concluded firstly,then a precipitation slit photography based on linear CCD is put forwarded,the process of linear scanning and the reconstruction process of precipitation are analyzed,the measuring optical system with telecentric optical system as imaging system and Cora illumination as lighting system are designed,which can realize uniform lighting and high precision measurement,and prospective problems were analyzed at last.
出处
《大气与环境光学学报》
CAS
2011年第6期415-422,共8页
Journal of Atmospheric and Environmental Optics
关键词
成像
狭缝摄像
线阵扫描
降水粒子探测
imaging
slit photographic
linear array scanning
raindrop detection