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Spectral signature selection for mapping unvegetated soilsAirborne multispectral scanner data covering the wavelength interval from 0.40-2.60 microns were collected at an altitude of 1000 m above the terrain in southeastern Pennsylvania. Uniform training areas were selected within three sites from this flightline. Soil samples were collected from each site and a procedure developed to allow assignment of scan line and element number from the multispectral scanner data to each sampling location. These soil samples were analyzed on a spectrophotometer and laboratory spectral signatures were derived. After correcting for solar radiation and atmospheric attenuation, the laboratory signatures were compared to the spectral signatures derived from these same soils using multispectral scanner data. Both signatures were used in supervised and unsupervised classification routines. Computer-generated maps using the laboratory and multispectral scanner derived signatures resulted in maps that were similar to maps resulting from field surveys. Approximately 90% agreement was obtained between classification maps produced using multispectral scanner derived signatures and laboratory derived signatures.
Document ID
19760033326
Document Type
Reprint (Version printed in journal)
Authors
May, G. A. (Pennsylvania State Univ. University Park, PA, United States)
Petersen, G. W. (Pennsylvania State University University Park, Pa., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: Remote Sensing of Environment
Volume: 4
Issue: 3, 19
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Funding Number(s)
CONTRACT_GRANT: NAS5-23133
Distribution Limits
Public
Copyright
Other