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Proceedings Paper

Radiometric calibration of the Sea-viewing Wide-Field-of-View Sensor using ground-reference techniques
Author(s): Emily E. Whittington; Kurtis J. Thome; Robert A. Barnes; Kelly A. Canham
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Paper Abstract

The Sea-viewing Wide Field of View Sensor (SeaWiFS) was launched during the summer of 1997. While its primary purpose was to provide quantitative data on ocean bio-optical properties at a global scale, its bi-linear gain design allows it to provide data over land as well. Thus, there has been greater interest in understanding the radiometric calibration of the sensor for both gain levels. The Remote Sensing Group of the Optical Sciences Center at the University of Arizona has been using vicarious calibration techniques that rely on ground-based test sites to calibrate a variety of sensors since the mid-1980s. The results of applying these techniques to SeaWiFS are presented here. Three ground-reference data sets are presented, the first from White Sands Missile Range in October 1997, the second from Railroad Valley Playa, Nevada in June 1998, and the third from Railroad Valley Playa in April 2000. The technique used here is a modified version of the reflectance-based method. In this technique, results from ground-based measurements of the surface and atmosphere are used in a radiative transfer code to determine the calibration coefficients for SeaWiFS. The results for all three cases are compared with calibration coefficients derived from the onboard calibration and vicarious calibration approaches used for SeaWiFS as well as to results.

Paper Details

Date Published: 15 November 2000
PDF: 8 pages
Proc. SPIE 4135, Earth Observing Systems V, (15 November 2000); doi: 10.1117/12.494227
Show Author Affiliations
Emily E. Whittington, Optical Sciences Ctr./Univ. of Arizona (United States)
Kurtis J. Thome, Optical Sciences Ctr./Univ. of Arizona (United States)
Robert A. Barnes, SAIC General Sciences Corp. and NASA Goddard Space Flight Ctr. (United States)
Kelly A. Canham, Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 4135:
Earth Observing Systems V
William L. Barnes, Editor(s)

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