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In-Situ Transfer Standard and Coincident-View Intercomparisons for Sensor Cross-CalibrationThere exist numerous methods for accomplishing on-orbit calibration. Methods include the reflectance-based approach relying on measurements of surface and atmospheric properties at the time of a sensor overpass as well as invariant scene approaches relying on knowledge of the temporal characteristics of the site. The current work examines typical cross-calibration methods and discusses the expected uncertainties of the methods. Data from the Advanced Land Imager (ALI), Advanced Spaceborne Thermal Emission and Reflection and Radiometer (ASTER), Enhanced Thematic Mapper Plus (ETM+), Moderate Resolution Imaging Spectroradiometer (MODIS), and Thematic Mapper (TM) are used to demonstrate the limits of relative sensor-to-sensor calibration as applied to current sensors while Landsat-5 TM and Landsat-7 ETM+ are used to evaluate the limits of in situ site characterizations for SI-traceable cross calibration. The current work examines the difficulties in trending of results from cross-calibration approaches taking into account sampling issues, site-to-site variability, and accuracy of the method. Special attention is given to the differences caused in the cross-comparison of sensors in radiance space as opposed to reflectance space. The results show that cross calibrations with absolute uncertainties lesser than 1.5 percent (1 sigma) are currently achievable even for sensors without coincident views.
Document ID
20150023338
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1109/TGRS.2013.2243841
Authors
Thome, Kurt (NASA Goddard Space Flight Center Greenbelt, MD United States)
McCorkel, Joel (NASA Goddard Space Flight Center Greenbelt, MD United States)
Czapla-Myers, Jeff (Arizona Univ. Tucson, AZ, United States)
Date Acquired
December 18, 2015
Publication Date
February 18, 2013
Publication Information
Publication: IEEE Transactions on Geoscience and Remote Sensing
Publisher: IEEE Transactions on Geoscience and Remote Sensing
Volume: 51
Issue: 3
Subject Category
Meteorology And Climatology
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN26276
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Advanced Spaceborne Thermal Emission and Reflection Radiometer
Advanced Land Imager
Moderate Resolution Imaging Spectroradiometer

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