Standoff determination of the particle size and concentration of small optical depth clouds based on double-scattering measurements: validation with calibrated target plates and limitations for daytime and nighttime measurements

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Authors: Nathalie Roy and Gilles Roy
Date: Aug. 10, 2008
From: Applied Optics(Vol. 47, Issue 23)
Publisher: Optical Society of America
Document Type: Author abstract; Report
Length: 116 words

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Abstract :

Diffractive target plates are used to emulate aerosols of known size and concentration. These target plates are used to validate and determine the sensitivity of a multiple-field-of-view lidar signal inversion technique based on double-scattering measurement to retrieve the particle size and the concentration of small optical depth clouds. We estimate that nighttime and daytime quantification (size and concentration) is possible for optical depths as low as 0.005 and 0.016, respectively. The recovery technique limiting factors are the shot noise, the laser features, the optical lens quality, the background illumination level, the background aerosol fluctuations, and the noise introduced by the lidar detector, a gated intensified camera (camera G-ICCD). OCIS codes: 030.4280, 040.1520, 280.1100, 280.3640, 290.4210, 290.5820.

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Gale Document Number: GALE|A184745265