Multistatic LIDAR measurements of aerosol multiple scattering
Document ID: 329
Park, Jin Hyen1
Philbrick, C. Russell1
Roy, G2
1 The Pennsylvania State University, Department of Electrical Engineering, University Park, PA, U.S.A.
2 Defence Research and Development Canada Valcartier, Val-Belair (Quebec),Canada
Presented: 29th Review of Atmospheric Transmission Models Meeting
Museum of Our National Heritage, Lexington, Massachusetts, June 13 -14, 2007
Abstract
Multiple scattering is an important factor in treating the penetration of radiation through an optically thick medium, such as clouds and fog. Experiments were conducted at DRDC and PSU aerosol chambers with different sizes of fog oil. The radial distribution of radiation scattered from the multistatic lidar beam can be analyzed from a CCD image to provide a measure of the spatial characteristics of multiple scattering. The changes in scattering characteristics are related to the number and size of scatterers in terms of optical depth within the scattering volume. The polarization ratio of the scattering phase function at different scattering angles is also a way to extract multiple scattering effects from multistatic lidar. Multiple scattering increases the depolarization of the scattered radiation as the scattering angle increases from 0° and 180° respectively.