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Remote Sens. 2017, 9(6), 511; doi:10.3390/rs9060511

Independent System Calibration of Sentinel-1B

1
German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany
2
European Space Agency ESTEC, Department Directorate of Earth Observation Programmes, Keplerlaan 1, P.O. Box 299, 2200 AG Noordwijk, The Netherlands
*
Author to whom correspondence should be addressed.
Academic Editors: Bruce Chapman, Paul Siqueira and Prasad S. Thenkabail
Received: 20 April 2017 / Revised: 5 May 2017 / Accepted: 17 May 2017 / Published: 23 May 2017
(This article belongs to the Special Issue Calibration and Validation of Synthetic Aperture Radar)

Abstract

Sentinel-1B is the second of two C-Band Synthetic Aperture Radar (SAR) satellites of the Sentinel-1 mission, launched in April 2016—two years after the launch of the first satellite, Sentinel-1A. In addition to the commissioning of Sentinel-1B executed by the European Space Agency (ESA), an independent system calibration was performed by the German Aerospace Center (DLR) on behalf of ESA. Based on an efficient calibration strategy and the different calibration procedures already developed and applied for Sentinel-1A, extensive measurement campaigns were executed by initializing and aligning DLR’s reference targets deployed on the ground. This paper describes the different activities performed by DLR during the Sentinel-1B commissioning phase and presents the results derived from the analysis and the evaluation of a multitude of data takes and measurements. View Full-Text
Keywords: internal calibration; geometric and radiometric calibration; polarimetric calibration; antenna model verification; antenna pointing determination; Sentinel-1; radiometric accuracy; calibration targets internal calibration; geometric and radiometric calibration; polarimetric calibration; antenna model verification; antenna pointing determination; Sentinel-1; radiometric accuracy; calibration targets
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Schwerdt, M.; Schmidt, K.; Tous Ramon, N.; Klenk, P.; Yague-Martinez, N.; Prats-Iraola, P.; Zink, M.; Geudtner, D. Independent System Calibration of Sentinel-1B. Remote Sens. 2017, 9, 511.

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