Download - University of Wisconsin GIFTS MURI University of Hawaii Contributions Paul G. Lucey Co-Investigator
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University of Wisconsin GIFTS MURI
University of Hawaii Contributions
Paul G. Lucey
Co-Investigator
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Hawaii Capabilities Contribute To All Aspects of Wisconsin MURI Project
University of Hawaii ContributionsMURIResearchComponents
IR SpectralPhenomenology
HyperspectralData Collection
HyperspectralDataCompressionMethodologies
MathematicalQuantificationofHyperspectralInformation
Provide testdata sets
Leverage other-funded UHresearch toreduce datavolume
RadiativeTransferModeling
Contributeexperience withmeasurementand modeling ofsurfaces
MathematicalRetrievalAlgorithmDevelopment
Contributeground-trutheddata sets
ProductResearch
Integrate modeling/data collection/informationextraction
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Overview—
•Surface Materials Properties • Airborne hyperspectral data reduced to emissivity• Laboratory data collection of materials spectral properties
•Directed airborne hyperspectral data collection
• Specialized surface materials properties of interest to GIFTS MURI• Data collections in support of
atmospheric model validation
•Hyperspectral analysis methodologies• Target detection and surface materials classification algorithms.
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AHI Airborne LWIR Hyperspectral Imager
UV, VISNIR, MWIR/LWIR
Field Spectrometers
UH Operates Airborne, Field and Laboratory Hyperspectral Data Collection Systems for Collection of
Surface Materials Spectral Properties
Nicolet MWIR/LWIR Laboratory FTIR
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Extensive Airborne Data Sets of Various Terrains
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Apparent Emissivity
Mosaic of (AHI) LWIR Data of Silver Lake CA
End-Members Determined byN-FINDR withConstrained Unmix
Abundance of Kaolinite calculated from spectral
unmixing
Kaolinite
Quartzite
Carbonates
Mixed Clays and Other Silicates
Mixed Clays
LWIR spectra of mineral components in the scene
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Airborne Hyperspectral and Field Ground Truth
Solid: AHI Airborne hyperspectral
Symbols: Field spectrometer ground truth
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Field Hyperspectral Ground Truth and Laboratory Support
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Directed AHI airborne hyperspectral data collection
•Specialized surface materials properties of interest to GIFTS MURI
•Data collections in support of atmospheric model validation
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Apparent Emissivity
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Emissivity
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Gas detection using a matched filter with AHI
Red area shows gas detection
Single band TIR image Matched filter detection
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Wavelength (um)
Emissivity
Gas Absorption PeaksGas Absorption Peaks
Probable reflected ozone
Spectra from AHI Data Cube
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Relevant Spectral Resolution
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AHI maximum spectral resolution (3 wavenumbers) is relevant to some GIFTS data collection modes
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Hyperspectral analysis methodologiesTarget detection and surface materials classification algorithmsAutonomous End-members and Spectral Unmixing
3
3 Spectral Endmembers Found Using Autonomous Method:
N-Findr Spectra then “Unmixed” Using Linear Algebra
Endmember spectra interpreted using spectrum library search
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Calcite
Alunite
Buddingtonite
Comparison of N-FINDR Endmember Spectra Comparison of N-FINDR Endmember Spectra to Library Spectrato Library Spectra
N-FINDR is red
Spectra Compare Best for Materials that have a near Pure Pixel in the Scene
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Surface materials mappingSurface materials mapping
Red: Silicates• Halloysite• Kaolinite• Jarosite• Buddingtonite
Green: Carbonates• Calcite
Blue: Sulfates• Alunite
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MURI Progress—
Continuing compilation of non-classified airborne hyperspectral data sets in units of surface emissivity in accessible on-line form
Continued collection of laboratory data in support of surface emissivity library
Test data collection of airborne hyperspectral data in Hawaii for atmospheric model validation.
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Compilation of non-classified airborne hyperspectral data
UH has collected 100’s of Gbytes of airborne hyperspectral data, but accessibility is poor (off-line DVD chronological storage)
Data catalog is under development including geographic location, thumbnails and materials summaries.
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Series1
Progress—
Continued collection of laboratory data in support of surface emissivity library
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Progress—
Test data collection of airborne hyperspectral data in Hawaii for atmospheric model validation.
AHI Flight Lines
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Single band IR image of active flow field
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Wavelength (microns)
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SO2SO2
Metastablesilica glass
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along track
Spatial spectral slice showing SO2 and metastable glass
Brightness temperature
Apparent Emissivity
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UVS Ground truth measurements of SO2 abundance
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Plan for Next Reporting Period
•Completion of on-line data base of laboratory spectra with simple data ingestion
•On-line data base/catalog of AHI airborne data
•Continue collection of directed validation airborne data runs
•Focus on aerosols and water vaporUsing HIGP ground truthing tools•Aerosol photometer•NIR/SWIR spectral water vapor
measurements•GPS water vapor