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Proceedings Paper

Calibration techniques for imaging FTIR data
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Paper Abstract

Full utilization of hyper-spectral imagery in the thermal infrared region requires a high-quality calibration, and the calibration quality requirement increases with the power and sophistication of the retrieval algorithms to be employed. Here we examine calibration issues associated with an airborne imaging Michelson Fourier Transform Infrared (FTIR)Spectrometer operating in the long-wave infrared (LWIR) region. In addition to the fundamental challenge of extracting a weak signal of interest from a complex background, problems which arise in such an instrument include pointing jitter, detector non-linearity, sampling position errors and etalon effects within the focal plane array. In each case, a frequent, high-quality calibration can ameliorate these problems. We discuss several hyper-spectral data analysis techniques, and how our calibration strategy, incorporating both ground and on-board calibration systems, improves the sensitivity of the retrievals.

Paper Details

Date Published: 17 January 2002
PDF: 12 pages
Proc. SPIE 4480, Imaging Spectrometry VII, (17 January 2002); doi: 10.1117/12.453341
Show Author Affiliations
Christoph C. Borel, Los Alamos National Lab. (United States)
William B. Clodius, Los Alamos National Lab. (United States)
Steven P. Love, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 4480:
Imaging Spectrometry VII
Michael R. Descour; Sylvia S. Shen, Editor(s)

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