title: Smoothness-constrained projection method for particle analysis based on forward light scattering.
abstract: The iterative projection method, originally proposed by Kaczmarz and Cimmino, was recently applied to particle size analysis with forward light scattering. Modification was made to improve the convergent procedure. However, there are still limitations. It is found that the solutions are oscillatory when the method is applied to a set of underdetermined linear equations without any additional constraints. A new version of the projection method, combined with the constraints of nonnegativity and smoothness, is proposed and is studied in the presence of experimental noise. Compared with the early versions of the projection method, this one shows fast convergence, is more stable against random noise, and is insensitive to particle size distributions.
authors.affiliation: College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China. shenjq@online.sh.cn
authors.forename: Jianqi
authors.initials: J
authors.lastname: Shen
authors.forename: Bin
authors.initials: B
authors.lastname: Yu
authors.forename: Huarui
authors.initials: H
authors.lastname: Wang
authors.forename: Haitao
authors.initials: H
authors.lastname: Yu
authors.forename: Yehuan
authors.initials: Y
authors.lastname: Wei