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Proceedings Paper

SOFIE instrument model and performance comparison
Author(s): Scott Hansen; Andrew Shumway; Chad Fish; Jim Peterson; Peter Mace; James Cook; Joel Nelsen; Dale Hooper; Quinn Young; Steve Wassom; John Kemp; Larry Gordley; Mark Hervig
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Paper Abstract

Space Dynamics Laboratory (SDL), in partnership with GATS, Inc., designed, built, and calibrated an instrument to conduct the Solar Occultation for Ice Experiment (SOFIE). SOFIE is the primary infrared sensor in the NASA Aeronomy of Ice in the Mesosphere (AIM) instrument suite. AIM's mission is to study polar mesospheric clouds (PMCs). SOFIE will make measurements in 16 separate spectral bands, arranged in 8 pairs between 0.29 and 5.3 μm. Each band pair will provide differential absorption limb-path transmission profiles for an atmospheric component of interest, by observing the sun through the limb of the atmosphere during solar occultation as AIM orbits Earth. A fast steering mirror and imaging sun sensor coaligned with the detectors will track the sun during occultation events and maintain stable alignment of the Sun on the detectors. This paper outlines the instrument specifications and resulting design. The success of the design process followed at SDL is illustrated by comparison of instrument model calculations to calibration results, and lessons learned during the SOFIE program are discussed. Relative spectral response predictions based on component measurements are compared to end-to-end spectral response measurements. Field-of-view measurements are compared to design expectations, and radiometric predictions are compared to results from blackbody and solar measurements. Measurements of SOFIE detector response non-linearity are presented, and compared to expectations based on simple detector models.

Paper Details

Date Published: 7 September 2006
PDF: 11 pages
Proc. SPIE 6297, Infrared Spaceborne Remote Sensing XIV, 62970P (7 September 2006); doi: 10.1117/12.692859
Show Author Affiliations
Scott Hansen, Utah State Univ. (United States)
Andrew Shumway, Utah State Univ. (United States)
Chad Fish, Utah State Univ. (United States)
Jim Peterson, Utah State Univ. (United States)
Peter Mace, Utah State Univ. (United States)
James Cook, Utah State Univ. (United States)
Joel Nelsen, Utah State Univ. (United States)
Dale Hooper, Utah State Univ. (United States)
Quinn Young, Utah State Univ. (United States)
Steve Wassom, Utah State Univ. (United States)
John Kemp, Utah State Univ. (United States)
Larry Gordley, GATS, Inc. (United States)
Mark Hervig, GATS, Inc. (United States)

Published in SPIE Proceedings Vol. 6297:
Infrared Spaceborne Remote Sensing XIV
Marija Strojnik, Editor(s)

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