Abstract:
Retrieving surface properties from airborne hyperspectral imagery requires the use of an atmospheric correction model to compensate for atmospheric scattering and absorpt...Show MoreMetadata
Abstract:
Retrieving surface properties from airborne hyperspectral imagery requires the use of an atmospheric correction model to compensate for atmospheric scattering and absorption. In this study, a solar spectral irradiance monitor (SSIM) from the University of Colorado Boulder was flown on a Twin Otter aircraft with the National Ecological Observatory Network's (NEON) imaging spectrometer. Upwelling and downwelling irradiance observations from the SSIM were used as boundary conditions for the radiative transfer model used to atmospherically correct NEON imaging spectrometer data. Using simultaneous irradiance observations as boundary conditions removed the need to model the entire atmospheric column so that atmospheric correction required modeling only the atmosphere below the aircraft. For overcast conditions, incorporating SSIM observations into the atmospheric correction process reduced root-mean-square (rms) error in retrieved surface reflectance by up to 57% compared with a standard approach. In addition, upwelling irradiance measurements were used to produce an observation-based estimate of the adjacency effect. Under cloud-free conditions, this correction reduced the rms error of surface reflectance retrievals by up to 27% compared with retrievals that ignored adjacency effects.
Published in: IEEE Transactions on Geoscience and Remote Sensing ( Volume: 59, Issue: 2, February 2021)
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- IEEE Keywords
- Index Terms
- Atmospheric Correction ,
- Spectral Radiance ,
- Simultaneous Observation ,
- Solar Spectral Irradiance ,
- Airborne Hyperspectral Imagery ,
- Root Mean Square Error ,
- Surface Reflectance ,
- Imaging Spectrometer ,
- Radiative Transfer Model ,
- Spectral Resolution ,
- Atmospheric Conditions ,
- Reflectance Spectra ,
- Surface Vegetation ,
- Solar Zenith Angle ,
- Above Ground Level ,
- Retrieval Accuracy ,
- Radiometric Calibration ,
- Airborne Visible/Infrared Imaging Spectrometer ,
- Flight Altitude ,
- Spectral Sampling ,
- Spectral Calibration ,
- Diffuse Radiation ,
- Light Collection ,
- Unmanned Aerial Systems ,
- Cirrus Clouds ,
- Flight Lines ,
- Topographic Correction ,
- Thin Clouds ,
- Atmospheric Transmittance
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Atmospheric Correction ,
- Spectral Radiance ,
- Simultaneous Observation ,
- Solar Spectral Irradiance ,
- Airborne Hyperspectral Imagery ,
- Root Mean Square Error ,
- Surface Reflectance ,
- Imaging Spectrometer ,
- Radiative Transfer Model ,
- Spectral Resolution ,
- Atmospheric Conditions ,
- Reflectance Spectra ,
- Surface Vegetation ,
- Solar Zenith Angle ,
- Above Ground Level ,
- Retrieval Accuracy ,
- Radiometric Calibration ,
- Airborne Visible/Infrared Imaging Spectrometer ,
- Flight Altitude ,
- Spectral Sampling ,
- Spectral Calibration ,
- Diffuse Radiation ,
- Light Collection ,
- Unmanned Aerial Systems ,
- Cirrus Clouds ,
- Flight Lines ,
- Topographic Correction ,
- Thin Clouds ,
- Atmospheric Transmittance
- Author Keywords