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{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,8,23]],"date-time":"2024-08-23T13:57:15Z","timestamp":1724421435192},"reference-count":23,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2017,5,23]],"date-time":"2017-05-23T00:00:00Z","timestamp":1495497600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"Sentinel-1B is the second of two C-Band Synthetic Aperture Radar (SAR) satellites of the Sentinel-1 mission, launched in April 2016\u2014two 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\u2019s 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.<\/jats:p>","DOI":"10.3390\/rs9060511","type":"journal-article","created":{"date-parts":[[2017,5,23]],"date-time":"2017-05-23T15:14:33Z","timestamp":1495552473000},"page":"511","source":"Crossref","is-referenced-by-count":61,"title":["Independent System Calibration of Sentinel-1B"],"prefix":"10.3390","volume":"9","author":[{"given":"Marco","family":"Schwerdt","sequence":"first","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-7896-908X","authenticated-orcid":false,"given":"Kersten","family":"Schmidt","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"given":"N\u00faria","family":"Tous Ramon","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"given":"Patrick","family":"Klenk","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"given":"Nestor","family":"Yague-Martinez","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"given":"Pau","family":"Prats-Iraola","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-4308-5636","authenticated-orcid":false,"given":"Manfred","family":"Zink","sequence":"additional","affiliation":[{"name":"German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, D-82234 Wessling, Germany"}]},{"given":"Dirk","family":"Geudtner","sequence":"additional","affiliation":[{"name":"European Space Agency ESTEC, Department Directorate of Earth Observation Programmes, Keplerlaan 1, P.O. Box 299, 2200 AG Noordwijk, The Netherlands"}]}],"member":"1968","published-online":{"date-parts":[[2017,5,23]]},"reference":[{"key":"ref_1","unstructured":"Geudtner, D., Potin, P., Torres, R., Snoeij, P., and Bibby, D. (2012, January 23\u201326). Overview of the GMES Sentinel-1 Mission. Proceedings of the 9th European Conference on Synthetic Aperture Radar, Nuremberg, Germany."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2352","DOI":"10.1109\/TGRS.2006.873853","article-title":"TOPSAR: Terrain Observation by Progressive Scans","volume":"44","author":"Zan","year":"2006","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"994","DOI":"10.1109\/JSTARS.2015.2449239","article-title":"Independent Verification of the Sentinel-1A System Calibration","volume":"9","author":"Schwerdt","year":"2016","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. 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