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Simulation study of geometric shape factor approach to estimating earth emitted flux densities from wide field-of-view radiation measurementsA study was performed on the use of geometric shape factors to estimate earth-emitted flux densities from radiation measurements with wide field-of-view flat-plate radiometers on satellites. Sets of simulated irradiance measurements were computed for unrestricted and restricted field-of-view detectors. In these simulations, the earth radiation field was modeled using data from Nimbus 2 and 3. Geometric shape factors were derived and applied to these data to estimate flux densities on global and zonal scales. For measurements at a satellite altitude of 600 km, estimates of zonal flux density were in error 1.0 to 1.2%, and global flux density errors were less than 0.2%. Estimates with unrestricted field-of-view detectors were about the same for Lambertian and non-Lambertian radiation models, but were affected by satellite altitude. The opposite was found for the restricted field-of-view detectors.
Document ID
19800051137
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Weaver, W. L.
(NASA Langley Research Center Hampton, VA, United States)
Green, R. N.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 10, 2013
Publication Date
May 1, 1980
Publication Information
Publication: Remote Sensing of Environment
Volume: 9
Subject Category
Geophysics
Accession Number
80A35307
Distribution Limits
Public
Copyright
Other

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