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Proceedings Paper

Calibration 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
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Paper Abstract

The Sea and Land Surface Temperature Radiometer (SLSTR) to be flown on ESA's Sentinel-3 mission is a multichannel scanning radiometer that will continue the 21-year datasets 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 <0.3K traced to international standards. To achieve these low uncertainties requires an end to end instrument calibration strategy that includes pre-launch calibration at subsystem and instrument level, on-board calibration systems and sustained post launch activities. The authors describe the preparations for the pre-launch calibration activities including the spectral response, instrument level alignment tests, solar and infrared radiometric calibration. A purpose built calibration rig has been designed and built at RAL space that will accommodate the SLSTR instrument, infrared calibration sources and 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 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: 24 October 2013
PDF: 17 pages
Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88890Y (24 October 2013); doi: 10.1117/12.2029796
Show Author Affiliations
David L. Smith, Rutherford Appleton Lab. (United Kingdom)
Tim J. Nightingale, Rutherford Appleton Lab. (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)

Published in SPIE Proceedings Vol. 8889:
Sensors, Systems, and Next-Generation Satellites XVII
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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