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Proceedings Paper

Vicarious calibration of the ASTER SWIR sensor including crosstalk correction
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Paper Abstract

The Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) sensor on the Terra spacecraft has been providing remote sensing data for the past five years. ASTER has three separate sensor sections including a sensor with six bands in the shortwave infrared section of the spectrum. The radiometric calibration of the SWIR sensor has been updated from preflight values based on the on-board calibration sources. The SWIR sensor shows evidence of crosstalk between SWIR bands which is probably optical in origin. The crosstalk was present during preflight calibration and is present in all data collected in-flight including calibration data. The effects of crosstalk can be partially removed by applying a crosstalk correction program. This correction changes the calibration of the system. In this paper we apply a vicarious calibration to crosstalk corrected ASTER imagery over high reflectance desert test sites using a reflectance based method. The updated calibration provides for better retrieval of spectral reflectance or radiance of ground targets in ASTER SWIR imagery.

Paper Details

Date Published: 22 August 2005
PDF: 8 pages
Proc. SPIE 5882, Earth Observing Systems X, 588217 (22 August 2005); doi: 10.1117/12.620090
Show Author Affiliations
Stuart F. Biggar, College of Optical Sciences/The Univ. of Arizona (United States)
Kurtis J. Thome, College of Optical Sciences/The Univ. of Arizona (United States)
Joel T. McCorkel, College of Optical Sciences/The Univ. of Arizona (United States)
Jessica M. D'Amico, College of Optical Sciences/The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 5882:
Earth Observing Systems X
James J. Butler, Editor(s)

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