Short-range remote detection of liquid surface
contamination by active imaging Fourier
transform spectrometry

doi:10.1364/OE.16.005708

Optics Express

Editor: C. Martijn de Sterke
Vol. 16, Iss. 8 — Apr. 14, 2008
pp: 5708–5714

Short-range remote detection of liquid surface contamination by active imaging Fourier transform spectrometry

Roland Harig, René Braun, Chris Dyer, Chris Howle, and Benjamin Truscott »View Author Affiliations

Optics Express, Vol. 16, Issue 8, pp. 5708-5714 (2008)
http://dx.doi.org/10.1364/OE.16.005708

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Abstract

An imaging Fourier transform spectrometer developed at TUHH was used for short-range remote detection and identification of liquids on surfaces. The method is based on the measurement of infrared radiation emitted and reflected by the surface and the liquid. A radiative transfer model that takes both the real and imaginary parts of the refractive index of the materials into account has been developed. The model is applied for the detection and identification of potentially hazardous liquids. Measurements of various liquids on diverse surfaces were performed. The measured spectra depend on the optical properties of the background surface. However, using the radiative transfer model, automatic remote detection and identification of the liquids is possible. The agreement between measured spectra and spectra calculated using the radiative transfer model is excellent.

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: February 8, 2008
Revised Manuscript: March 31, 2008
Manuscript Accepted: April 2, 2008
Published: April 8, 2008

Citation
Roland Harig, René Braun, Chris Dyer, Chris Howle, and Benjamin Truscott, "Short-range remote detection of liquid surface contamination by active imaging Fourier transform spectrometry," Opt. Express 16, 5708-5714 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-8-5708

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References

J.-M. Theriault, E. Puckrin, J. Hancock, P. Lecavalier, C. Jackson Lepage, J. O. Jensen, "Passive standoff detection of chemical warfare agents on surfaces," Appl. Opt. 43, 5870-5885 (2004). [CrossRef] [PubMed]
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R. Harig, J. Gerhard, R. Braun, C. Dyer, B. Truscott, R. Moseley: "Remote Detection of Gases and Liquids by Imaging Fourier Transform Spectrometry using a Focal Plane Array Detector: First Results," Proc. SPIE 6378, 637816, 1-12 (2006).
ASTER spectral library, http://speclib.jpl.nasa.gov/

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