Spectral test and calibration of the atmospheric infrared sounder

Margaret H. Weiler; L. Larrabee Strow; Scott E. Hannon; Steven L. Gaiser; Rudolf A. Schindler; Kenneth Overoye; Hartmut H. Aumann

doi:10.1117/12.453471

18 January 2002 Spectral test and calibration of the atmospheric infrared sounder

Margaret H. Weiler, L. Larrabee Strow, Scott E. Hannon, Steven L. Gaiser, Rudolf A. Schindler, Kenneth Overoye, Hartmut H. Aumann

Author Affiliations +

Proceedings Volume 4483, Earth Observing Systems VI; (2002) https://doi.org/10.1117/12.453471
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

Citation Download Citation

Margaret H. Weiler, L. Larrabee Strow, Scott E. Hannon, Steven L. Gaiser, Rudolf A. Schindler, Kenneth Overoye, and Hartmut H. Aumann "Spectral test and calibration of the atmospheric infrared sounder", Proc. SPIE 4483, Earth Observing Systems VI, (18 January 2002); https://doi.org/10.1117/12.453471

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