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Airborne Visible/Infrared Imaging Spectrometer (AVIRIS): Inflight radiometric calibration and the determination of surface reflectanceThe inflight radiometric performance of AVIRIS is presented together with a comparison of methods of recovering surface spectral reflectance from the data. Performance is evaluated by comparing radiance predicted from AVIRIS with radiance generated from the LOWIRAN 6 atmospheric model and measured surface reflectance. Comparisons show apparent agreement to within a few percent between 1800 and 2450 nm. Between 600 and 1800 nm the response of AVIRIS is systematically low by as much as 70 percent, and between 400 and 600 nm it is higher than expected. These problems are traced to thermal distortions of the instrument, and to detachment during flight of optical fibers connecting foreoptics to two of four spectrometers in the instrument. Of three methods studied, an empirical one involving calibration curves constructed from field reflectance measurements returns accurate predictions of the surface reflectance independent of the actual radiometric significance of the flight data.
Document ID
19890000986
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Conel, J. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vane, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Green, R. O.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Alley, R. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Carere, V.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gabell, A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bruegge, C. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1988
Publication Information
Publication: ESA, Proceedings of the 4th International Colloquium on Spectral Signatures in Remote Sensing
Subject Category
Earth Resources And Remote Sensing
Accession Number
89N10357
Distribution Limits
Public
Copyright
Other
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