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Proceedings Paper

Radiometric characterization of hyperspectral imagers using multispectral sensors
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Paper Abstract

The Remote Sensing Group (RSG) at the University of Arizona has a long history of using ground-based test sites for the calibration of airborne and satellite based sensors. Often, ground-truth measurements at these tests sites are not always successful due to weather and funding availability. Therefore, RSG has also employed automated ground instrument approaches and cross-calibration methods to verify the radiometric calibration of a sensor. The goal in the cross-calibration method is to transfer the calibration of a well-known sensor to that of a different sensor. This work studies the feasibility of determining the radiometric calibration of a hyperspectral imager using multispectral imagery. The work relies on the Moderate Resolution Imaging Spectroradiometer (MODIS) as a reference for the hyperspectral sensor Hyperion. Test sites used for comparisons are Railroad Valley in Nevada and a portion of the Libyan Desert in North Africa. Hyperion bands are compared to MODIS by band averaging Hyperion's high spectral resolution data with the relative spectral response of MODIS. The results compare cross-calibration scenarios that differ in image acquisition coincidence, test site used for the calibration, and reference sensor. Cross-calibration results are presented that show agreement between the use of coincident and non-coincident image pairs within 2% in most bands as well as similar agreement between results that employ the different MODIS sensors as a reference.

Paper Details

Date Published: 21 August 2009
PDF: 11 pages
Proc. SPIE 7452, Earth Observing Systems XIV, 745210 (21 August 2009); doi: 10.1117/12.828608
Show Author Affiliations
Joel McCorkel, College of Optical Sciences, The Univ. of Arizona (United States)
Kurt Thome, NASA Goddard Space Flight Ctr. (United States)
Nathan Leisso, College of Optical Sciences, The Univ. of Arizona (United States)
Nikolaus Anderson, College of Optical Sciences, The Univ. of Arizona (United States)
Jeff Czapla-Myers, College of Optical Sciences, The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 7452:
Earth Observing Systems XIV
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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