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Measuring the Earth from Above: 30 years (and Counting) of Hyperspectral Imaging

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Dr. Alexander F.H. Goetz, !%ASD, Inc.%!

Hyperspectral remote sensing, in which an entire spectrum is acquired at each pixel of an airborne or orbiting sensor, provides a more complete understanding of the Earth’s surface and is a tool for monitoring change. Unlike multispectral imaging, hyperspectral technology makes it possible to identify surface materials while removing the intervening atmospheric signal. Its technology, methods and environmental applications have expanded steadily over the past three decades, and it is now feasible to move to the next stage and attain continuous global coverage to bring to bear upon...Read full article

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    Published: June 2011
    Glossary
    hyperspectral imaging
    Hyperspectral imaging is an advanced imaging technique that captures and processes information from across the electromagnetic spectrum. Unlike traditional imaging systems that record only a few spectral bands (such as red, green, and blue in visible light), hyperspectral imaging collects data in numerous contiguous bands, covering a wide range of wavelengths. This extended spectral coverage enables detailed analysis and characterization of materials based on their spectral signatures. Key...
    multispectral imaging
    Multispectral imaging is a technique that involves capturing and analyzing images at multiple discrete spectral bands within the electromagnetic spectrum. Unlike hyperspectral imaging, which acquires data across a continuous range of wavelengths, multispectral imaging is characterized by capturing information at several specific, predefined bands. This allows for the extraction of spectral signatures and information from different parts of the spectrum. Key aspects of multispectral imaging...
    agricultureAirborne Imaging SpectrometerAirborne Observation PlatformAirborne Visible Infrared Imaging SpectrometerAlexander F. H. GoetzArizonaASD Inc.atmospheric absorptionatmospheric and aerosol studiesatmospheric interferenceBasic SciencebiosphereBrian CurtisscamerasCenter for Study of Earth from SpaceCoconino PlateauCupritedefenseEarth observationsenergyENVIenvironmental scienceenvironmental studiesERTS 1FeaturesFieldSpecgeologyGeophysical Environment Research Spectral Image Processing Systemhydrologyhyperspectral imagingHyperspectral Remote Sensinghyperspectral sensorsHyspIRIimage cubesImagingimaging spectrometersJerry SolomonJet Propulsion LaboratoryLandsat 1limnologyMike AbramsmineralogyModerate Resolution Imaging SpectroradiometerMODISmultispectral imagingNASANational Ecological Observatory NetworkNevadaoceanographyPFRSPIDASportable field reflectance spectrometerPSIISensors & Detectorssoil and land managementspectral mapping techniquesspectral reflectance measurementsspectroscopyTest & MeasurementUniversity of Colorado BoulderUS Department of AgricultureUS Geological SurveyvolcanologyWalter Bausch

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