
Proceedings Paper
Spatial sampling considerations of the CERES instrumentFormat | Member Price | Non-Member Price |
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Paper Abstract
The CERES (Clouds and Earth Radiant Energy System) instrument is a scanning radiometer with three channels for
measuring Earth radiation budget. At present CERES models are operating aboard the Terra, Aqua and Suomi/NPP
spacecraft and flights of CERES instruments are planned for the JPSS-1 spacecraft and its successors. CERES scans
from one limb of the Earth to the other and back. The footprint size grows with distance from nadir simply due to
geometry so that the size of the smallest features which can be resolved from the data increases and spatial sampling
errors increase with nadir angle. This paper presents an analysis of the effect of nadir angle on spatial sampling
errors of the CERES instrument.
The analysis performed in the Fourier domain. Spatial sampling errors are created by smoothing of features which
are the size of the footprint and smaller, or blurring, and inadequate sampling, that causes aliasing errors. These
spatial sampling errors are computed in terms of the system transfer function, which is the Fourier transform of the
point response function, the spacing of data points and the spatial spectrum of the radiance field.
Paper Details
Date Published: 17 November 2014
PDF: 8 pages
Proc. SPIE 9244, Image and Signal Processing for Remote Sensing XX, 92441O (17 November 2014); doi: 10.1117/12.2065735
Published in SPIE Proceedings Vol. 9244:
Image and Signal Processing for Remote Sensing XX
Lorenzo Bruzzone, Editor(s)
PDF: 8 pages
Proc. SPIE 9244, Image and Signal Processing for Remote Sensing XX, 92441O (17 November 2014); doi: 10.1117/12.2065735
Show Author Affiliations
G. Louis Smith, Science Systems Applications, Inc. (United States)
NASA Langley Research Ctr. (United States)
Natividdad Manalo-Smith, Science Systems Applications, Inc (United States)
NASA Langley Research Ctr. (United States)
NASA Langley Research Ctr. (United States)
Natividdad Manalo-Smith, Science Systems Applications, Inc (United States)
NASA Langley Research Ctr. (United States)
Kory Priestley, Science Systems Applications, Inc. (United States)
NASA Langley Research Ctr. (United States)
NASA Langley Research Ctr. (United States)
Published in SPIE Proceedings Vol. 9244:
Image and Signal Processing for Remote Sensing XX
Lorenzo Bruzzone, Editor(s)
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