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Proceedings Paper

Differential detection with a double-beam interferometer
Author(s): Jean-Marc Theriault; Claude Bradette; Andre J. Villemaire; Martin Chamberland; Jean Giroux
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Paper Abstract

First steps in the development of a new method for the remote detection of gaseous emanations by FTIR are presented. The method is based on the use of a double beam interferometer-spectrometer (CATSI) optimized for optical subtraction. The instrument is described with a particular emphasis on its capabilities for differential detection and background suppression. Radiometric equations applicable to the differential detection of gaseous emanations by FTIR are established for the general case of slant path scenarios containing any type of background scenes. Finally the potential of the method is illustrated through several laboratory measurements done with the CATSI system.

Paper Details

Date Published: 23 July 1997
PDF: 11 pages
Proc. SPIE 3082, Electro-Optical Technology for Remote Chemical Detection and Identification II, (23 July 1997); doi: 10.1117/12.280936
Show Author Affiliations
Jean-Marc Theriault, Defence Research Establishment Valcartier (Canada)
Claude Bradette, Defence Research Establishment Valcartier (Canada)
Andre J. Villemaire, Bomem Inc. (Canada)
Martin Chamberland, Bomem Inc. (Canada)
Jean Giroux, Bomem Inc. (Canada)


Published in SPIE Proceedings Vol. 3082:
Electro-Optical Technology for Remote Chemical Detection and Identification II
Mahmoud Fallahi; Ellen A. Howden, Editor(s)

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