Inversion of water clouds lidar returns using the azimuthal dependence of the cross-polarization signal

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Authors
  1. Cao, X.
  2. Roy, G.
  3. Tremblay, G.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN);Lidar Consultant, Ottawa ON (CAN);AEREX Avionics Inc, Breakeyville QUE (CAN)
Abstract
The contrast in the azimuthal pattern of cross polarized lidar data is used directly to retrieve the extinction coefficient profile of water droplet clouds. Using Monte Carlo simulation, we demonstrate that there is a simple mathematical relationship between the optical depth and the contrast of the cross polarization azimuthal pattern. This relation is independent of the water cloud droplets size, cloud position and extinction profile. Derivation of the extinction profile of a water droplets cloud is obtained directly using the simple mathematical relationship without performing lidar equation inversion. The technique is limited to spherical particles.
Keywords
Lidar;Extinction coefficient retrieval;Multiple scattering;Scattering;polarization
Report Number
DRDC-RDDC-2018-P058 — External Literature
Date of publication
01 May 2018
Number of Pages
9
Reprinted from
Optics Letters, vol 43, no 03, February 1 2018, p 451-454
DSTKIM No
CA046021
CANDIS No
806492
Format(s):
Electronic Document(PDF)

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