Inverse radiation problems in inhomogeneous media - Ho, C.-H.; Ozisik, M.N. (Elsevier)
An inverse radiation analysis is presented for determining optical thickness and space-dependent single-scattering albedo from measured exit radiation intensities for an inhomogeneous, absorbing, isotropically scattering, plane-parallel medium subjected to isotropic incident radiation at one of its boundary surfaces. The method involves solving the nonlinear least-square equations constructed from the measured data and the exact solutions of the direct problem. Confidence bounds on the estimated parameters are developed to assess the accuracy of the inverse solutions. The confidence bounds are also useful to determine the corrective measures needed to improve the precision of the predictions. The effects of using reflected, transmitted, or both reflected and transmitted intensities as measured data on the accuracy of the predictions are examined. Effects of inaccuracy involved in the direct solution resulting from the use of approximation models on the accuracy of the inverse solutions are illustrated.
http://linkinghub.elsevier.com/retrieve/pii/0022-4073(88)90135-5
Keywords: U