Classification of radar imagery over boreal regions for methane exchange studies
INTERNATIONAL JOURNAL OF REMOTE SENSING(1996)
Abstract
Airborne synthetic aperture radar (SAR) data acquired over Alaska are used to investigate the ability of SAR to distinguish between land cover classes of differing methane exchange rates. Land cover within the study area is divided into four classes: forest, bog, water, and fen, with fen having the highest methane emission. Accurate classification is achieved using both statistical and neural network techniques applied to fully polarimetric L- and C-band data. Similar classification accuracies are also obtained using non-polarimetric subsets of the data, analogous to data that would be available by combining SAR observations from ERS-1/2, JERS-1 (Fuyo-l), and RADARSAT. Accurate classification of fens, however, is possible only when the non-polarimetric subset includes L-band data.
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Key words
radar imagery,methane,image classification,neural network,synthetic aperture radar
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