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Proceedings Paper

Spherical and nonspherical aerosol and particulate characterization using optical pattern recognition techniques
Author(s): Martin S. Marshall; Robert E. Benner
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Paper Abstract

Optical pattern recognition techniques for characterizing spherical and nonspherical aerosols and particulates utilized by Dugway Proving Ground in their smoke and obscurant testing programs are presented. The three standard classes of unclassified military smokes and obscurants are included in this study, namely standard liquid aerosol smokes, fibrous obscurants, and flaked brass and graphite IR obscurants. The overall objectives of size distribution in nearly real time under conditions of high particulate loading are specified. A holographic version of the commercially available wedge-ring detector is described to replace the classical matched and phase-only filters, and some of the possible benefits are enumerated for characterizing the two classes of nonspherical obscurants. Computer simulations and experimental data collected for opaque spherical and nonspherical particles are included utilizing the classical matched filter, the phase-only filter and the holographic wedge-ring detector. Computer simulations are presented predicting the performance of a system where the output from the optical correlator utilizing the holographic wedge-ring detector is coupled directly into a optical processor to accomplish the decision making and classification tasks to enhance the speed and performance of the system

Paper Details

Date Published: 1 November 1991
PDF: 14 pages
Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); doi: 10.1117/12.49703
Show Author Affiliations
Martin S. Marshall, U.S. Army Dugway Proving Ground (United States)
Robert E. Benner, Univ. of Utah (United States)


Published in SPIE Proceedings Vol. 1564:
Optical Information Processing Systems and Architectures III
Bahram Javidi, Editor(s)

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