Abstract
The inversion method to estimate the size distribution of particles with the extinction spectrum was described. We applied a singular value decomposition to this inversion method. When Junge and Log-normal types are assumed as particle size distribution function, those distribution types are inverted from the extinction spectra which are calculated by the size distributions and kernel functions. A good inverted solution was obtained, even if the effective digit of extinction intensity was reduced at least 2 (effective digits). It was found that the accuracy of this method was dependent on the division number of the analysis range for the radius and the wave length. The singular value decomposition to the light extinction is useful for the size distribution analysis.
