Radiometric calibration of the Sea-viewing Wide-Field-of-View Sensor using ground-reference techniques

Emily E. Whittington; Kurtis J. Thome; Robert A. Barnes; Kelly A. Canham

doi:10.1117/12.494227

15 November 2000 Radiometric calibration of the Sea-viewing Wide-Field-of-View Sensor using ground-reference techniques

Emily E. Whittington, Kurtis J. Thome, Robert A. Barnes, Kelly A. Canham

Proceedings Volume 4135, Earth Observing Systems V; (2000) https://doi.org/10.1117/12.494227
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

Emily E. Whittington, Kurtis J. Thome, Robert A. Barnes, and Kelly A. Canham "Radiometric calibration of the Sea-viewing Wide-Field-of-View Sensor using ground-reference techniques", Proc. SPIE 4135, Earth Observing Systems V, (15 November 2000); https://doi.org/10.1117/12.494227

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