In-Flight Radiometric Calibration Of The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)

James E Conel; Robert O Green; Ronald E Alley; Carol J Bruezte; Veronique Carrere; Jack S Margolis; Gregg Vane; Thomas G Chrien; Philiip N Slater; Stuart F Biggar

doi:10.1117/12.945685

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12 October 1988 In-Flight Radiometric Calibration Of The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)

James E Conel, Robert O Green, Ronald E Alley, Carol J Bruezte, Veronique Carrere, Jack S Margolis, Gregg Vane, Thomas G Chrien, Philiip N Slater, Stuart F Biggar

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Proceedings Volume 0924, Recent Advances in Sensors, Radiometry, and Data Processing for Remote Sensing; (1988) https://doi.org/10.1117/12.945685
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

Abstract

A reflectance-based method was used to provide an analysis of the in-flight radiometric performance of AVIRIS. Field spectral reflectance measurements of the surface and extinction measurements of the atmosphere using solar radiation were used as input to atmospheric radiative transfer calculations. Five separate codes were used in the analysis. Four include multiple scattering, and the computed radiances from these for flight conditions were in good agreement. Code-generated radiances were compared with AVIRIS-predicted radiances based on two laboratory calibrations (pre- and post-season of flight) for a uniform highly reflecting natural dry lake target. For one spectrometer (C), the pre- and post-season calibration factors were found to give identical results, and to be in agreement with the atmospheric models that include multiple scattering. This positive result validates the field and laboratory calibration technique. Results for the other spectrometers (A, B and D) were widely at variance with the models no matter which calibration factors were used. Potential causes of these discrepancies are discussed.

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James E Conel, Robert O Green, Ronald E Alley, Carol J Bruezte, Veronique Carrere, Jack S Margolis, Gregg Vane, Thomas G Chrien, Philiip N Slater, and Stuart F Biggar "In-Flight Radiometric Calibration Of The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)", Proc. SPIE 0924, Recent Advances in Sensors, Radiometry, and Data Processing for Remote Sensing, (12 October 1988); https://doi.org/10.1117/12.945685

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