8 October 2015 Three-dimension scanning micro pulse lidar for detecting haze space distribution
Author Affiliations +
Proceedings Volume 9678, AOPC 2015: Telescope and Space Optical Instrumentation; 967810 (2015) https://doi.org/10.1117/12.2200945
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shichun Li, Shichun Li, Qing Yan, Qing Yan, Pengpeng Wei, Pengpeng Wei, Wenhui Xin, Wenhui Xin, Dengxin Hua, Dengxin Hua, } "Three-dimension scanning micro pulse lidar for detecting haze space distribution", Proc. SPIE 9678, AOPC 2015: Telescope and Space Optical Instrumentation, 967810 (8 October 2015); doi: 10.1117/12.2200945; https://doi.org/10.1117/12.2200945
PROCEEDINGS
6 PAGES


SHARE
Back to Top