Predicted Accuracy and Validation of the AVIRIS Radiometric Calibration Standard
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Engineering topics
Publications and source records attributed to Green, R..
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As with other imaging spectrometers, AVIRIS measures the upwelling specral radiance incident at the sensor. Most research and applications objectives for AVIRIS are based on the molecular absorption and scattering features expressed in the surface reflectance.
AVIRIS is a calibrated Earth-looking imaging spectrometer that measures the total upwelling spectral radiance in the solar reflected spectrum for 400 to 2500 nm.
This study was motivated by the possibility of using the AVIRIS images to simulate the spectral response functions that define the spectral bands of both cameras on CBERS.
New spaceborne and airborne imaging spectrometers are being proposed and developed to derive properties of the Earth's surface from measurements of the upwelling radiance in the solar reflected spectrum.
This paper proposes a new method for the in-flight validation of spectral calibration based on surface light sources that contain sharp spectral emission lines.
This paper presents key aspects of the implementation, operation, calibration, georectification, and validation of AVIRIS on a low-altitude platform in the Autumn of 1998.
A key scientific objective of the original BOREAS field campaign (1993-1996) was to obtain the baseline data required for modeling and predicting fluxes of energy, mass and trace gases in the boreal forest biome.
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A granular-materials experiment is being developed for a 2002 launch for Space Station deployment. The experiment is funded by NASA HQ and managed through NASA Lewis Research Center. The experiment will examine electrostatic aggregation of coarse granular materials with the goals of (a) obtaining proof for an electrostatic dipole model of grain interactions, and (b) obtaining knowledge about the way aggregation affects the behavior of natural particulate masses: (1) in unconfined dispersions (clouds such as nebulae, aeolian dust palls, volcanic plumes), (2) in semi-confined, self-loaded masses as in fluidized flows (pyroclastic surges, avalanches) and compacted regolith, or (3) in semi-confined non-loaded masses as in dust layers adhering to solar cells or space suits on Mars. The experiment addresses both planetary/astrophysical issues as well as practical concerns for human exploration of Mars or other solar system bodies. Additional information is contained in the original.
An MTF-based optimization method is described that can extract maximum spectral and spatial uniformity of response from compact pushbroom imaging spectrometer designs.
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Several standards for radiometric calibration were measured repeatedly with a spectroradiometer in order to understand how they compared in accuracy and stability.