A method of restoring the aerosol particle size distribution function on the set of piecewise-convex functions

Authors

  • Y. Wang
  • D.V. Lukyanenko
  • A.G. Yagola
  • Y. Zhang

Keywords:

aerosol particle size distribution function
Fredholm integral equations of the first-kind
conjugate gradient projection method
piecewise-convex functions

Abstract

The problem of restoring the aerosol particle size distribution function with the use of the measured particle extinction spectrum is considered. This problem is reduced to a Fredholm integral equation of the first-kind. The conjugate gradient method with the projection on a constraint set is applied as a minimization process of the residual functional. The constraints are chosen as piecewise-convex functions on the basis of physical features of the sought solution. An efficient scheme of regularization for the problems of such a type is proposed. This work was partially supported by the Russian Foundation for Basic Research (projects os. 11-01-00040 and 10-01-91150-NFSC).

New computational technologies

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Published

2012-01-10

Issue

Vol. 13 (2012): Issue 1.

Section

Section 1. Numerical methods and applications

Author Biographies

Y. Wang

Institute of Geology and Geophysics, Chinese Academy of Sciences
Beitucheng Western Road, 19, 100029, Beijing, China
• Professor

D.V. Lukyanenko

Lomonosov Moscow State University,
Faculty of Physics
• Junior Researcher

A.G. Yagola

Lomonosov Moscow State University,
Faculty of Physics
• Professor

Y. Zhang

Institute of Geology and Geophysics, Chinese Academy of Sciences
Beitucheng Western Road, 19, 100029, Beijing, China
• PhD Student

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