Detection of Trace Gases Using High-Resolution IR Spectroscopy

  • Alexander S. Zachor
  • Theodore Zehnpfennig
  • A. T. StairJr.
Part of the Springer Series in Optical Sciences book series (SSOS, volume 39)


The capability of a Fourier Transform Spectrometer (FTS) system to detect and characterize trace gases in a localized cloud, such as the effluent from a stationary source, is discussed in this paper. An FTS sensor with imaging capability can measure the spectrum of the spatial contrast produced by the cloud (Figure 1). Of course, the cloud temperature must be different from the background brightness temperature (higher or lower), and the resultant spatial contrast must be distinguishable from background clutter. The contrast can be measured by simply subtracting the signals measured in different pixels, or by the Background Optical Suppression Scheme (BOSS) described in Part II.


Background Suppression Entrance Aperture Fourier Transform Spectrometer Spatial Contrast Minimum Detectable Quantity 
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    A.S. Zachor, B. Bartschi, and M. Ahmadjian, Proc. SPIE 277, 86 (1981).ADSCrossRefGoogle Scholar
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    Air Force Geophysics Laboratory Reports AFGL-TR-81–0134, AFGL-TR-80–0236, and AFGL-TR-80–0237.Google Scholar
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    W. Herget, Appl. Opt. 21, 635 (1982).ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1983

Authors and Affiliations

  • Alexander S. Zachor
    • 1
  • Theodore Zehnpfennig
    • 2
  • A. T. StairJr.
    • 3
  1. 1.Atmospheric Radiation ConsultantsActonUSA
  2. 2.Visidyne, Inc.BurlingtonUSA
  3. 3.Air Force Geophysics LaboratoryHanscom Air Force BaseUSA

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