Vicarious calibration of VNIR/SWIR bands of ASTER

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AVIRIS predicting sensor radianceShows % difference between AVIRIS & ASTER atsensorradiances for Railroad Valley -June 30, 2001P AVIRIS data band-averaged to ASTER spectral responseP Band 9 omitted because insufficient AVIRIS bands tocover full response of ASTER band151050-5-10-15-20B1 B2 B3 B4 B5 B6 B7 B8
Direct comparison resultsP There exist several days of coincident ground data alongwith MODIS and ASTER dataP Can calibrate both sensors using the same site at RRVplaya! 1 km 2 area of Railroad Valley used for both sensors! Same radiative transfer code inputs and resultsP Dates shown here were from May 16 and June 14, 2002P Band 1 of ASTER had saturated pixels within the site inboth casesHigh-ResolutionTest SiteLowResolutionTestSite
Page 1: Vicarious calibration ofVNIR/SWIR b
Page 4 and 5: Why bother with vicarious?Radiance
Page 6 and 7: Vicarious approachesCurrent approac
Page 8 and 9: Reflectance-Based ApproachMeasuredS
Page 10 and 11: Surface reflectanceMeasure a large
Page 12 and 13: Surface reflectance
Page 14 and 15: Railroad Valley Test Site
Page 16 and 17: Lunar Lake test site
Page 18 and 19: Test site characteristicsTest site
Page 20 and 21: Recent results - ETM+Radiometric ca
Page 22 and 23: ASTER Band 1P Level 1B data do nots
Page 24 and 25: ASTER Band 3P Level 1B similar toBa
Page 26 and 27: 1.05Summary of resultsGraphs below
Page 28 and 29: Solar irradiance model effectsP AST
Page 32 and 33: Coincident MODIS dataUsing ASTER an
Page 34 and 35: Cross-comparison resultsSummary of
Page 36 and 37: ConclusionsP ASTER VNIR bands! Bias
Page 38: ConclusionsP Current level of preci

Vicarious calibration of VNIR/SWIR bands of ASTER

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