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Proceedings Paper

Atmospheric Correction Of Degraded Thermal Imagery Using Aircraft Measurements And Atmospheric Models
Author(s): Arthur E. Byrnes; John R. Schott
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Paper Abstract

Airborne measurements of atmospheric-path transmission and atmospheric-path (up-welled) radiance in the 8 to 14 μm band were obtained by applying a multiple-altitude and a dual view angle calibration technique to thermal infrared line scanner data. Spectrally corrected LOWTRAN was used to generate path transmission and up-welled radiance values corresponding to the empirical measurements. Using LOWTRAN and the multiple-altitude method, calibration of the thermograms to account for atmospheric effects yields computed surface temperatures within 0.7°C of concurrent kinetic temperature readings. The angular calibration method results in similar computed surface temperature errors for 1000 ft altitude data and increasing by 1.2°C per 1000 ft up to a 6000 ft altitude. This paper contains the results of a comparative analysis of these approaches for atmospheric calibration.

Paper Details

Date Published: 2 July 1985
PDF: 8 pages
Proc. SPIE 0549, Image Quality: An Overview, (2 July 1985); doi: 10.1117/12.948813
Show Author Affiliations
Arthur E. Byrnes, Canadian Forces (Canada)
John R. Schott, Rochester Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0549:
Image Quality: An Overview
Lionel R. Baker; Edward M. Granger, Editor(s)

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