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Journal of Applied Remote Sensing • Open Access

Calibration approach and plan for the sea and land surface temperature radiometer
Author(s): David L. Smith; Tim J. Nightingale; Hugh Mortimer; Kevin Middleton; Ruben Edeson; Caroline V. Cox; Chris T. Mutlow; Brian J. Maddison; Peter Coppo

Paper Abstract

The sea and land surface temperature radiometer (SLSTR) to be flown on the European Space Agency’s (ESA) Sentinel-3 mission is a multichannel scanning radiometer that will continue the 21 year dataset of the along-track scanning radiometer (ATSR) series. As its name implies, measurements from SLSTR will be used to retrieve global sea surface temperatures to an uncertainty of <0.3  K traced to international standards. To achieve, these low uncertainties require an end-to-end instrument calibration strategy that includes prelaunch calibration at subsystem and instrument level, on-board calibration systems, and sustained postlaunch activities. The authors describe the preparations for the prelaunch calibration activities, including the spectral response, the instrument level alignment tests, and the solar and infrared radiometric calibrations. A purpose built calibration rig has been designed and built at the Rutherford Appleton Laboratory space department (RAL Space) that will accommodate the SLSTR instrument, the infrared calibration sources, and the alignment equipment. The calibration rig has been commissioned and results of these tests will be presented. Finally, the authors will present the planning for the on-orbit monitoring and calibration activities to ensure that the calibration is maintained. These activities include vicarious calibration techniques that have been developed through previous missions and the deployment of ship-borne radiometers.

Paper Details

Date Published: 30 June 2014
PDF: 20 pages
J. Appl. Remote Sens. 8(1) 084980 doi: 10.1117/1.JRS.8.084980
Published in: Journal of Applied Remote Sensing Volume 8, Issue 1
Show Author Affiliations
David L. Smith, Rutherford Appleton Lab. (United Kingdom)
Tim J. Nightingale, Rutherford Appleton Lab Space (United Kingdom)
Hugh Mortimer, Rutherford Appleton Lab. (United Kingdom)
Kevin Middleton, Rutherford Appleton Lab. (United Kingdom)
Ruben Edeson, Rutherford Appleton Lab. (United Kingdom)
Caroline V. Cox, Rutherford Appleton Lab. (United Kingdom)
Chris T. Mutlow, Rutherford Appleton Lab. (United Kingdom)
Brian J. Maddison, Rutherford Appleton Lab. (United Kingdom)
Peter Coppo, SELEX ES S.p.A. (Italy)

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