Atmospheric Correction Of Degraded Thermal Imagery Using Aircraft Measurements And Atmospheric Models

Arthur E. Byrnes; John R. Schott

doi:10.1117/12.948813

2 July 1985 Atmospheric Correction Of Degraded Thermal Imagery Using Aircraft Measurements And Atmospheric Models

Arthur E. Byrnes, John R. Schott

Proceedings Volume 0549, Image Quality: An Overview; (1985) https://doi.org/10.1117/12.948813
Event: 1985 Technical Symposium East, 1985, Arlington, United States

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.

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Arthur E. Byrnes and John R. Schott "Atmospheric Correction Of Degraded Thermal Imagery Using Aircraft Measurements And Atmospheric Models", Proc. SPIE 0549, Image Quality: An Overview, (2 July 1985); https://doi.org/10.1117/12.948813

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KEYWORDS

Calibration

Atmospheric modeling

Data modeling

Scanners

Sensors

Atmospheric corrections

Fourier transforms

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