Study on airborne laser cloud particle imaging probe and its calibration

ZENG Xing; WU Bo; SHI Xiaoding; FAN Dong; L&Uuml; Mingai; ZHANG Guojuan; LI Shaobo; ZHOU Xin

doi:10.7510/jgjs.issn.1001-3806.2015.06.014

In order to measure and image cloud droplets ranging from 25m to 1550m, 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.

Study on airborne laser cloud particle imaging probe and its calibration

Corresponding author: ZHOU Xin, zhoxn985@soho.com

1. College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China;

2. Southwest Institute of Technical Physics, Chengdu 610041, China

Received Date: 2014-09-28

Accepted Date: 2014-11-06

Available Online: 2015-11-25

Abstract: In order to measure and image cloud droplets ranging from 25m to 1550m, 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.

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Reference (15)

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Study on airborne laser cloud particle imaging probe and its calibration

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