Spatial sampling considerations of the CERES instrument

G. Louis Smith; Natividdad Manalo-Smith; Kory Priestley

doi:10.1117/12.2065735

17 November 2014 Spatial sampling considerations of the CERES (Clouds and Earth Radiant Energy System) instrument

G. Louis Smith, Natividdad Manalo-Smith, Kory Priestley

Proceedings Volume 9244, Image and Signal Processing for Remote Sensing XX; 92441O (2014) https://doi.org/10.1117/12.2065735
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

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.

Citation Download Citation

G. Louis Smith, Natividdad Manalo-Smith, and Kory Priestley "Spatial sampling considerations of the CERES (Clouds and Earth Radiant Energy System) instrument", Proc. SPIE 9244, Image and Signal Processing for Remote Sensing XX, 92441O (17 November 2014); https://doi.org/10.1117/12.2065735

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available