Generating 275-m Resolution Land Surface Products From the Multi-Angle Imaging SpectroRadiometer Data

This paper shows how to reconstruct the original 275-m resolution data of the Multi-angle Imaging SpectroRadiometer (MISR) instrument in the 24 spectrodirectional global mode channels that are spatially averaged to 1.1 km on-board the Terra platform, with negligible loss of information relative to i...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2012-10, Vol.50 (10), p.3980-3990
Main Authors: Verstraete, M. M., Hunt, L. A., Scholes, R. J., Clerici, M., Pinty, B., Nelson, D. L.
Format: Article
Language:English
Subjects:
Africa
Applied geophysics
Cameras
Earth observing system
Earth sciences
Earth, ocean, space
ecosystems
Exact sciences and technology
high-resolution imaging
Instruments
Internal geophysics
inverse problems
Land surface
Orbits
Sensors
Spatial resolution
spectroradiometers
Surface topography
vegetation mapping
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Summary:This paper shows how to reconstruct the original 275-m resolution data of the Multi-angle Imaging SpectroRadiometer (MISR) instrument in the 24 spectrodirectional global mode channels that are spatially averaged to 1.1 km on-board the Terra platform, with negligible loss of information relative to images acquired in native-resolution local mode. Standard approaches to improve the spatial resolution of products rely on one (typically panchromatic) high-resolution (HR) image to sharpen multiple spectral images. In the case of the MISR-HR package described here, three of the 12 available HR channels are combined to regenerate each of the 24 reduced-resolution channel to its native resolution. The accurate and rigorously reconstructed spectral bidirectional reflectance data allow sensitive and physically meaningful land surface attributes to be recovered at a spatial resolution appropriate to document the spatial heterogeneity of the land surface and relevant for climate and environment studies. MISR has been in continuous operation since February 2000 and provides global coverage in at most nine days (depending on latitude). This technique allows the generation of quantitative information to monitor change and model ecosystem function virtually anywhere and at any time during the last decade. The potential is demonstrated for a savanna landscape in South Africa.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2012.2189575