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Proceedings Paper

Three-dimension scanning micro pulse lidar for detecting haze space distribution
Author(s): Shichun Li; Qing Yan; Pengpeng Wei; Wenhui Xin; Dengxin Hua
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Paper Abstract

Aim to the current situation that the haze distribution detection is limited by network of point-type instruments, a three dimension scanning micro pulse lidar is researched on the basis of the Mie scattering theory of atmospheric particles. In order to strengthen detective ability of fine particles having a significant effect on human respiratory system, we choose a diode-pumped Nd:YAG solid laser with 532-nm wavelength and wind cooled technique as excited optical source to actualize lidar miniaturization. The pulse energy of 50 μJ and pulse repetitive frequency of 1 kHz are configured to ensure the eye-safety and high temporal-spatial resolution, while the lidar operates in the horizontal scanning mode. A Cassegrain telescope with clear aperture of 254 mm is utilized to collect the backscattering signal for portable multi-location observation. The lidar echo signal is filtered through an interference filter with passed bandwidth of 0.2 nm to implement all-time efficient detection. The experimental observation of atmospheric particle distribution is carried out in horizontal scanning mode. Each plane- position-indication of atmospheric particle distribution contains approximately 300 profiles in the horizontal plane within 6-min interval. Experimental results show that this lidar prototype can probe the space distribution of atmospheric particle with the range of 6 km, and that the influence of industrial production on the atmospheric particle density is 2-3 times as much as that of human activity.

Paper Details

Date Published: 8 October 2015
PDF: 6 pages
Proc. SPIE 9678, AOPC 2015: Telescope and Space Optical Instrumentation, 967810 (8 October 2015); doi: 10.1117/12.2200945
Show Author Affiliations
Shichun Li, Xi'an Univ. of Technology (China)
Qing Yan, Xi'an Univ. of Technology (China)
Pengpeng Wei, Xi'an Univ. of Technology (China)
Wenhui Xin, Xi'an Univ. of Technology (China)
Dengxin Hua, Xi'an Univ. of Technology (China)

Published in SPIE Proceedings Vol. 9678:
AOPC 2015: Telescope and Space Optical Instrumentation
Bin Xiangli; Dae Wook Kim; Suijian Xue, Editor(s)

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