Feasibility Studies of the Three-Wavelength Mie-Scattering Polarization Scheimpflug Lidar Technique
School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
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Published online: 7 July 2020
A three-wavelength Mie-scattering polarization Scheimpflug lidar system, utilizing 808-nm, 520-nm and 405-nm multimode laser diodes as light sources and two CMOS sensors as detectors, is developed for the studies of the aerosol extinction coefficient, depolarization ratio and the Ångström exponent. Atmospheric monitoring has been carried out on a near horizontal path from 23:00 January 14th to 06:00 January 15th, 2019 at Dalian, which is a coast city in Northern China. By studying the depolarization, aerosol extinction coefficient and Ångström exponent, it has been found out that a strong north wind blew away local spherical haze particles and brought external non-spherical large-size particles. The measurement results indicated a promising future of employing the present three-wavelength polarization Scheimpflug lidar system in the applications of atmospheric remote sensing.
Key words: Three-wavelength / Scheimpflug lidar / laser diode / aerosol / polarization / remote sensing
© The Authors, published by EDP Sciences, 2020
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