Remote Characterization of Chemical Vapor Plumes by LWIR Imaging Fabry-Perot Spectrometry

Abstract

Physical Sciences Inc. has developed and tested two long-wavelength infrared (LWIR) hyperspectral imaging spectroradiometers based on the insertion of a rapidly tunable Fabry-Perot etalon in the field of view of a HgCdTe focal plane array (FPA). The tunable etalon-based optical system enables a wide field-of-view and the acquisition of narrowband (7 to 11/cm spectral resolution), radiometrically calibrated imagery throughout the 8 to 11 micrometer spectral region. The instruments function as chemical imaging sensors by comparing the spectrum of each pixel in the scene with reference spectra of target chemical species. We present results of recent field tests in this paper.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2001
Accession Number
ADA453063

Entities

People

  • Christopher M. Gittins
  • James O. Jensen
  • William J. Marinelli

Organizations

  • Physical Sciences (United States)

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Absorption
  • Algorithms
  • Atmospheric Motion
  • Control Systems
  • Data Analysis
  • Data Sets
  • Detection
  • Detectors
  • False Alarms
  • Field Tests
  • Measurement
  • Operating Systems
  • Physical Sciences
  • Radiative Transfer
  • Spectra
  • Spectrometry
  • Temperature Gradients

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Optical Physics and Photonics.
  • Spectroscopy.