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1 April 2014 Point response function of the Clouds and Earth Radiant Energy System scanning radiometer
G. Louis Smith, Janet L. Daniels, Kory J. Priestley, Susan Thomas
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Journal of Applied Remote Sensing, Vol. 8, Issue 1, 084991 (April 2014). https://doi.org/10.1117/1.JRS.8.084991
Abstract
An overview of work related to the point response function (PRF) of the Clouds and Earth Radiant Energy System (CERES) scanning radiometer is presented. The aspects of the CERES design that affect the PRF are described, and then the design of the PRF is explained. The PRF was designed by shaping the field of view so as to minimize the blur plus alias errors of the radiance field reconstructed from the CERES measurements. The design is conducted in the Fourier domain. The PRF can then be computed by transforming the resulting transfer function to the physical domain. Alternatively, the PRF can be computed in the physical plane. The PRF of each model of the CERES instrument has been tested in the Radiation Calibration Facility by use of a PRF source and compared well with prediction. CERES instruments are aboard the Terra, Aqua, and Suomi-NPP spacecraft. In orbit, lunar observations are used to validate the PRF. These results showed nominal performance except for the longwave window channel of flight model 2, for which a region of anomalously high sensitivity was found.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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G. Louis Smith, Janet L. Daniels, Kory J. Priestley, and Susan Thomas "Point response function of the Clouds and Earth Radiant Energy System scanning radiometer," Journal of Applied Remote Sensing 8(1), 084991 (1 April 2014). https://doi.org/10.1117/1.JRS.8.084991
Published: 1 April 2014
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KEYWORDS
Sensors
Radiometry
Clouds
Space operations
Calibration
Spatial frequencies
Electronic filtering
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