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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 23 — Aug. 10, 2009
  • pp: 4545–4561

Detection and characterization of chemical vapor fugitive emissions by nonlinear optimal estimation: theory and simulation

Christopher M. Gittins  »View Author Affiliations


Applied Optics, Vol. 48, Issue 23, pp. 4545-4561 (2009)
http://dx.doi.org/10.1364/AO.48.004545


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Abstract

This paper addresses detection and characterization of chemical vapor fugitive emissions in a non scattering atmosphere by processing of remotely-sensed long-wavelength infrared spectra. The analysis approach integrates a parameterized signal model based on the radiative transfer equation with a statistical model for the infrared background. The maximum likelihood model parameter values are defined as those that maximize a Bayesian posterior probability and are estimated using a Gauss–Newton algorithm. For algorithm performance evaluation we simulate observation of fugitive emissions by augmenting plume-free measured spectra with synthetic plume signatures. As plumes become optically thick, the Gauss–Newton algorithm yields significantly more accurate estimates of chemical vapor column density and significantly more favorable plume detection statistics than clutter-matched-filter-based and adaptive-subspace-detector-based plume characterization and detection.

© 2009 Optical Society of America

OCIS Codes
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.6340) Spectroscopy : Spectroscopy, infrared
(150.1135) Machine vision : Algorithms
(110.4234) Imaging systems : Multispectral and hyperspectral imaging
(280.4991) Remote sensing and sensors : Passive remote sensing
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: December 12, 2008
Revised Manuscript: April 20, 2009
Manuscript Accepted: June 2, 2009
Published: August 4, 2009

Citation
Christopher M. Gittins, "Detection and characterization of chemical vapor fugitive emissions by nonlinear optimal estimation: theory and simulation," Appl. Opt. 48, 4545-4561 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-23-4545


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