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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 10 — Apr. 1, 2009
  • pp: 1837–1852

Imaging sensor constellation for tomographic chemical cloud mapping

Bogdan R. Cosofret, Daisei Konno, Aram Faghfouri, Harry S. Kindle, Christopher M. Gittins, Michael L. Finson, Tracy E. Janov, Mark J. Levreault, Rex K. Miyashiro, and William J. Marinelli  »View Author Affiliations


Applied Optics, Vol. 48, Issue 10, pp. 1837-1852 (2009)
http://dx.doi.org/10.1364/AO.48.001837


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Abstract

A sensor constellation capable of determining the location and detailed concentration distribution of chemical warfare agent simulant clouds has been developed and demonstrated on government test ranges. The constellation is based on the use of standoff passive multispectral infrared imaging sensors to make column density measurements through the chemical cloud from two or more locations around its pe riphery. A computed tomography inversion method is employed to produce a 3D concentration profile of the cloud from the 2D line density measurements. We discuss the theoretical basis of the approach and present results of recent field experiments where controlled releases of chemical warfare agent simulants were simultaneously viewed by three chemical imaging sensors. Systematic investigations of the algorithm using synthetic data indicate that for complex functions, 3D reconstruction errors are less than 20% even in the case of a limited three-sensor measurement network. Field data results demonstrate the capability of the constellation to determine 3D concentration profiles that account for 86 % of the total known mass of material released.

© 2009 Optical Society of America

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 18, 2008
Revised Manuscript: January 30, 2009
Manuscript Accepted: February 25, 2009
Published: March 24, 2009

Citation
Bogdan R. Cosofret, Daisei Konno, Aram Faghfouri, Harry S. Kindle, Christopher M. Gittins, Michael L. Finson, Tracy E. Janov, Mark J. Levreault, Rex K. Miyashiro, and William J. Marinelli, "Imaging sensor constellation for tomographic chemical cloud mapping," Appl. Opt. 48, 1837-1852 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-10-1837


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