机载激光云粒子成像仪研制与校准研究  

Study on airborne laser cloud particle imaging probe and its calibration

作　　者：曾星[1] 伍波[2] 史晓丁[2] 樊冬[2] 吕明爱[2] 张国娟[2] 李少波[2] 周昕[1] 

机构地区：[1]四川大学电子信息学院,成都610064 [2]西南技术物理研究所,成都610041

出　　处：《激光技术》2015年第6期798-801,共4页Laser Technology

基　　金：国家自然科学基金资助项目(2011YQ110059)

摘　　要：为了实现对25μm^1550μm范围云粒子的测量和成像,采用了光学成像方法,基于准直光束照射的云粒子在64元探测器上投影切片组合的原理,研制了机载激光云粒子成像仪。介绍了激光云粒子成像仪各组成部分的功能,进行了探测单元量化标准、数据获取与处理方法、以及影响云粒子成像准确性的因素等方面的分析。建立了粒子尺寸校准装置,并采用7种规格的标准圆点进行了校准实验。结果表明,机载激光云粒子成像仪可探测到云粒子并成像,实现了粒子的尺寸测量和2维图像显示。In order to measure and image cloud droplets ranging from 25μm to 1550μm,an airborne cloud particle imaging probe was designed based on the established optical imaging techniques. The images of particles passing through a collimated laser beam were projected onto a linear array of 64-element photo detectors and were reconstructed from the individual image slices. The function of each component and the quantitative standard of each detection unit were introduced. The method of data acquisition and the factors affecting the accuracy of cloud particle imaging were discussed. A calibration setup of particle size was constructed where seven kinds of standard dots were used to calibrate cloud imaging probe. The calibration experiment results show that cloud imaging probe can accurately achieve particle size distribution and display 2-D images. The airborne experiment data shows that cloud imaging probe is able to detect cloud droplets and acquire their images.

关 键 词：激光技术 光学成像技术 云粒子成像 并行探测器 校准装置 

分 类 号：TH741[机械工程—光学工程]