"Polarization And Atmospheric Backscatter Coefficient Measurements" by Richard A. Anderson
 

Polarization And Atmospheric Backscatter Coefficient Measurements

Abstract

Recently, it was pointed out that polarization effects must be considered in hard target calibration of lidars. A vector theory of radiometry is developed, and it is demonstrated for a real nonideal target that the reflectance is a matrix quantity and not a scalar quantity, and all its components must be measured. These concepts can be extended to actual field measurements of the volume backscatter coefficients. The volume backscatter coefficient at range R is an averaged (4 x 4) matrix, which is averaged over the sampling depth dR = cτ/2. The transmitted beam is polarized in a definite sense, the received beam is still polarized, and both are represented as (4 x 1) Stokes vectors so that the interaction must be represented by a (4 x 4) matrix called the volume backscatter coefficient /3. Present experiments are in error for data are considered a scalar quantity with only one value not a matrix with sixteen components. Some of these components may be zero but many are not. © 1989 Optical Society of America.

Department(s)

Physics

International Standard Serial Number (ISSN)

2155-3165; 1559-128X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Optica, All rights reserved.

Publication Date

01 Jan 1989

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