Indexed by:会议论文

Date of Publication:2021-03-05

Volume:237

Key Words:Three-wavelength; Scheimpflug lidar; laser diode; aerosol; polarization; remote sensing

Abstract:A three-wavelength Mie-scattering polarization Scheimpflug lidar system, utilizing 808-nm, 520nm 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 Angstrom 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 Angstrom 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.