Vicarious Calibration of ASTER via the Reflectance-Based Approach

被引:63
作者
Thome, Kurt J. [1 ]
Arai, Kohei [2 ]
Tsuchida, Satoshi [3 ,4 ]
Biggar, Stuart F. [1 ]
机构
[1] Univ Arizona, Coll Opt Sci, Remote Sensing Grp, Tucson, AZ 85721 USA
[2] Saga Univ, Dept Informat Sci, Saga 8408502, Japan
[3] Natl Inst Adv Ind Sci & Technol, Grid Technol Res Ctr, Tsukuba, Ibaraki 3058567, Japan
[4] Geol Survey Japan, Tsukuba, Ibaraki 3058567, Japan
来源
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2008年 / 46卷 / 10期
基金
美国国家航空航天局;
关键词
Absolute radiometric calibration; Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER); vicarious calibration;
D O I
10.1109/TGRS.2008.928730
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
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 mu m and with larger differences being seen at shorter wavelengths and beyond 2.2 mu m. Comparisons between the groups and to the ASTER sensor are best at 1.66 mu m (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.
引用
收藏
页码:3285 / 3295
页数:11
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