Calibration and data analysis issues in modern infrared spectrometers using large detector arrays

Denis A. Elliott; Hartmut H. Aumann

doi:10.1117/12.2186680

8 September 2015 Calibration and data analysis issues in modern infrared spectrometers using large detector arrays

Denis A. Elliott, Hartmut H. Aumann

Proceedings Volume 9607, Earth Observing Systems XX; 96070M (2015) https://doi.org/10.1117/12.2186680
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Modern infrared spectrometers contain many detectors. The Atmospheric Infrared Sounder (AIRS) has 4482 infrared detectors. The Cross-track Infrared Sounder (CrIS) (a Fourier Transform Spectrometer) has 27. This paper examines issues related to multiple detectors and describes their impact on calibration and data analysis, using examples from AIRS and CrIS. The potential differences among detectors are not limited to dead channels. They can include: noise characteristics, spatial response, illumination through the optical system, and exposure to radiation. The more detectors in an instrument, the more important it is for both the hardware and data analysis software designers to be prepared to handle such differences. Techniques used to mitigate these effects are described in this paper.

Citation Download Citation

Denis A. Elliott and Hartmut H. Aumann "Calibration and data analysis issues in modern infrared spectrometers using large detector arrays", Proc. SPIE 9607, Earth Observing Systems XX, 96070M (8 September 2015); https://doi.org/10.1117/12.2186680

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