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Proceedings Paper

Spectral test and calibration of the atmospheric infrared sounder
Author(s): Margaret H. Weiler; L. Larrabee Strow; Scott E. Hannon; Steven L. Gaiser; Rudolf A. Schindler; Kenneth Overoye; Hartmut H. Aumann
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Paper Abstract

Spectral characterization of the Atmospheric Infrared Sounder (AIRS) instrument during ground Thermal/Vacuum tests posed a number of difficult challenges due to the high spectral resolution and accurate knowledge requirements. A Fourier transform spectrometer was used in external step-scan mode to characterize the spectral response functions (SRFs) of the 2378 infrared detectors in the focal plane array which is part of the AIRS grating spectrometer. This paper summarizes the test development and characterization results. Special post-test data analysis was needed separately to determine the effects of interference in the order-separating entrance filters, which have a different temperature dependence from that of the otherwise unperturbed SRFs. This separation, which was successfully accomplished, provides calibration of the AIRS SRF shape over the full expected range of instrument temperatures.

Paper Details

Date Published: 18 January 2002
PDF: 9 pages
Proc. SPIE 4483, Earth Observing Systems VI, (18 January 2002); doi: 10.1117/12.453471
Show Author Affiliations
Margaret H. Weiler, BAE Systems (United States)
L. Larrabee Strow, Univ. of Maryland/Baltimore County (United States)
Scott E. Hannon, Univ. of Maryland/Baltimore County (United States)
Steven L. Gaiser, Jet Propulsion Lab. (United States)
Rudolf A. Schindler, Jet Propulsion Lab. (United States)
Kenneth Overoye, BAE Systems (United States)
Hartmut H. Aumann, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4483:
Earth Observing Systems VI
William L. Barnes, Editor(s)

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