TY - JOUR
T1 - Vicarious calibration of ASTER via the reflectance-based approach
AU - Thome, Kurt J.
AU - Arai, Kohei
AU - Tsuchida, Satoshi
AU - Biggar, Stuart F.
N1 - Funding Information:
Manuscript received June 3, 2005; revised June 2, 2007. Current version published October 1, 2008. This work was supported by the National Aeronautics and Space Administration under Contract NAS5-3117. K. J. Thome and S. F. Biggar are with the Remote Sensing Group, College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). K. Arai is with the Department of Information Science, Saga University, Saga 840-8502, Japan. S. Tsuchida is with the Geological Survey of Japan and the Grid Technology Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8567, Japan. Digital Object Identifier 10.1109/TGRS.2008.928730
PY - 2008/10
Y1 - 2008/10
N2 - The reflectance-based vicarious calibration approach has been applied to the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) that is on the Terra platform. The results from three separate groups operating at the same sites at the same time are presented. The three groups show good agreement between each other, with differences between the groups being smaller than 4% in all bands ranging from 0.6 to 2.2 μm and with larger differences being seen at shorter wavelengths and beyond 2.2 μm. Comparisons between the groups and to the ASTER sensor are best at 1.66 μm (band 4), with differences between each group being less than 0.5% and all of the groups agreeing with ASTER to better than 5%. Differences in the visible and near infrared (VNIR) are larger, particularly prior to August 2002 when an update to the calibration processing was performed. These differences exceed 10% in some bands. In addition, the vicarious results appear to show a different trend than the onboard calibration for the VNIR indicating a possible problem with the onboard calibrator for bands 1-3.
AB - The reflectance-based vicarious calibration approach has been applied to the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) that is on the Terra platform. The results from three separate groups operating at the same sites at the same time are presented. The three groups show good agreement between each other, with differences between the groups being smaller than 4% in all bands ranging from 0.6 to 2.2 μm and with larger differences being seen at shorter wavelengths and beyond 2.2 μm. Comparisons between the groups and to the ASTER sensor are best at 1.66 μm (band 4), with differences between each group being less than 0.5% and all of the groups agreeing with ASTER to better than 5%. Differences in the visible and near infrared (VNIR) are larger, particularly prior to August 2002 when an update to the calibration processing was performed. These differences exceed 10% in some bands. In addition, the vicarious results appear to show a different trend than the onboard calibration for the VNIR indicating a possible problem with the onboard calibrator for bands 1-3.
KW - Absolute radiometric calibration
KW - Advanced spaceborne thermal emission and reflection radiometer (ASTER)
KW - Vicarious calibration
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U2 - 10.1109/TGRS.2008.928730
DO - 10.1109/TGRS.2008.928730
M3 - Article
AN - SCOPUS:53849116860
SN - 0196-2892
VL - 46
SP - 3285
EP - 3295
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
IS - 10
M1 - 4637978
ER -