The effect of atmospheric water vapor on automatic classification of ERTS dataAbsorption by atmospheric water vapor changes the spectral signatures collected by multispectral scanners if channels are not chosen to avoid the atmospheric water bands. For ERTS (Earth Resources Technology Satellite), the Multispectral Scanner band 7 (MSS 7, .8 to 1.1 micron) is the only band significantly affected. Line-by-line atmospheric absorption calculations showed that this effect can multiply the intensity by factors ranging from .77 to 1.0. If horizontal gradients in atmospheric water exist between training fields and the rest of the scene, errors are introduced in automatic classification of the imagery. The degradation of the classification of corn and soybeans was determined by using actual ERTS data and simulating the absorption effects on the MSS 7 band.
Document ID
19750033059
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Pitts, D. E.
Mcallum, W. E. (NASA Johnson Space Center Houston, Tex., United States)
Dillinger, A. E. (Lockheed Electronics Co., Inc. Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: International Symposium on Remote Sensing of Environment