L. Hespel (laurent.hespel@onecert.fr) and A. Delfour (andre.delfour@onecert.fr) are with the Département d’Optique Théorique et Appliquée, Office National d’Etudes et de Recherches Aérospatiales, 2 avenue E. Belin, B.P. 4055, 31055 Toulouse, France.
A search procedure based on a least-squares method including a
regularization scheme constructed from numerical filtering is
presented. This method, with the addition of a nephelometer, can be
used to determine the particle-size distributions of various scattering
media (aerosols, fogs, rocket exhausts, motor plumes) from angular
static light-scattering measurements. For retrieval of the
distribution function, the experimental data are matched with
theoretical patterns derived from Mie theory. The method is
numerically investigated with simulated data, and the performance of
the inverse procedure is evaluated. The results show that the
retrieved distribution function is quite reliable, even for strong
levels of noise.
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