Accession Number:

ADB080654

Title:

Improved Methods to Invert the Particle Size Distribution Function from Mie Scattering Measurements

Descriptive Note:

Final rept. 1 Oct 1982-30 Sep 1983

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

• Curry, B. P.
• Kiech, E. L.

Report Date:

1984-02-01

Pagination or Media Count:

48.0

Abstract:

Two previously report methods to invert the particle size distribution function PSDF from Mie scattering measurements on aerosol clouds are reconsidered and improvements are made in both. One of these methods - nonlinear regression - is described in greater detail than has previously been reported. Both techniques are tested by inverting the PSDF from noisy, synthetic scattering data. Some situations which result in ambiguities in determining the PSDF are identified and analyzed with the aid of residual error contour plots.

Descriptors:

• *DISTRIBUTION FUNCTIONS
• *INVERSION
• *MIE SCATTERING
• *NONLINEAR ANALYSIS
• *PARTICLE SIZE
• *REGRESSION ANALYSIS
• AEROSOLS
• CHARTS
• CLOUDS
• COMPUTATIONS
• EIGENVECTORS
• INTEGRAL EQUATIONS
• LIGHT SCATTERING
• MEASUREMENT

Subject Categories:

• Statistics and Probability
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE