Identifying and Mapping Night Lights using Imaging Spectrometry
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Authors
Kruse, Fred A.
Elvidge, Christopher D.
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2010-12
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Abstract
Remote mapping of night lights using the
Defense Meteorological Satellite Program (DMSP) has been
used for decades to inventory the global distribution of
human activity. ©± The coarse spatial and spectral
resolution of DMSP, however, has precluded discrimination
of lighting types or spectral characteristics. Recent
demonstrations using photography from the International
Space Station and airborne multispectral simulations
demonstrate significant potential, but high-spectralresolution
field and laboratory measurements indicate that
these methods do not take full advantage of the spectral
information available. This research demonstrates the use
of imaging spectrometer data to identify, characterize, and
map urban lighting based on comparison to a lights spectral
library. The library provides information about spectral
emission lines unique to specific lighting types.
ProSpecTIR-VS imaging spectrometer data of Las Vegas,
Nevada were analyzed to extract spectral features and these
were compared to the spectral library measurements on a
pixel-by-pixel basis, resulting in a detailed spatial map
showing different lighting types. The nature and
distribution of lights can be used as a surrogate for
characterization of urban settings, and measurement of
urban development.
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Article
Description
IEEEAC paper #1282, Version 2, Updated December 22, 2010
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Physics
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.