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Intraband Radiometric Performance of the LANDSAT 4 Thematic MapperThose radiometric characteristics of the LANDSAT 4 thematic mapper (TM) that could be established without absolute calibration of spectral data were examined. Radiometrically raw (B type) data of three daytime and two nighttime scenes were used, including TM scenes from Washington, DC; northeast Arkansas; Cape Cod, MA; Roanoke, VA; Richmond, VA; and Silver Bell, AZ. The effective resolution in radiance is degraded by a factor of about 2 by the irregular width of the digital levels. Underpopulated levels are consistent over all bands and detectors, and are spaced an average of 4 digital numbers (DN) apart. In band 6, level 127 is avoided by a factor 30. Several detectors exhibit a change of gain with a period of several scans; the largest effect is about 4%. At high contrast boundaries, some of the detectors in band 5 commonly overshoot by several DN and require about 30 samples to recover. The high frequency noise level of each detector was characterized by the standard deviation of the first derivative in the sample direction across a flat field. A coherent-sinusoidal-noise pattern is evident in detector 1 of band 3. The correlation between the six reflective bands was determined and used to select three groups of bands whose aggregate first principal components contain the greatest total information. A composite of the first components of bands 1, 2, 3, bands 5 and 7, and band 4, together containing 89% of the information in the reflectance bands, has reduced the effect of noise.
Document ID
19850013428
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kieffer, H. H.
(Geological Survey Flagstaff, AZ, United States)
Eliason, E. M.
(Geological Survey Flagstaff, AZ, United States)
Chavez, P. S., Jr.
(Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: LANDSAT-4 Sci. Characterization Early Results, Vol. 3, Pt. 2
Subject Category
Earth Resources And Remote Sensing
Accession Number
85N21738
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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