DocumentCode :
61209
Title :
In-Situ Transfer Standard and Coincident-View Intercomparisons for Sensor Cross-Calibration
Author :
Thome, Kurt ; McCorkel, J. ; Czapla-Myers, J.
Author_Institution :
Space & Earth Sci. Directorate, NASA Goddard Space Flight Center, Greenbelt, MD, USA
Volume :
51
Issue :
3
fYear :
2013
fDate :
Mar-13
Firstpage :
1088
Lastpage :
1097
Abstract :
There 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 <; 1.5% (1σ) are currently achievable even for sensors without coincident views.
Keywords :
atmospheric optics; atmospheric techniques; calibration; radiometers; reflectivity; Advanced Land Imager; Landsat-5 TM; Landsat-7 ETM+; SI-traceable cross-calibration; advanced spaceborne radiometer; advanced spaceborne reflection; advanced spaceborne thermal emission; atmospheric properties; coincident-view intercomparisons; enhanced thematic mapper plus; in-situ transfer; invariant scene approaches; moderate resolution imaging spectroradiometer; on-orbit calibration; radiance space; reflectance space; reflectance-based approach; relative sensor-to-sensor calibration; sampling issues; sensor cross-calibration; sensor overpass time; site-to-site variability; special attention; standard intercomparisons; temporal characteristics; Calibration; Earth; MODIS; Orbits; Remote sensing; Satellites; Uncertainty; Advanced Land Imager (ALI); Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER); Enhanced Thematic Mapper Plus (ETM+); Moderate Resolution Imaging Spectroradiometer (MODIS); SI-traceability; Thematic Mapper (TM); cross-calibration; vicarious calibration;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/TGRS.2013.2243841
Filename :
6464573
Link To Document :
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