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Sentinel-1A Calibration Support during Routine Operation using innovative Point Targets

Schmidt, Kersten and Schwerdt, Marco and Tous Ramon, Núria and Castellanos Alfonzo, Gabriel and Zink, Manfred (2015) Sentinel-1A Calibration Support during Routine Operation using innovative Point Targets. In: Electromagnetic Wave Propagation and Scattering in Remote Sensing and Communications (Reviewed Proceedings of WFMN). Chemnitz University Publication. Wave Propagation in Communication, Microwaves Systems and Navigation (WFMN), 2015-02-10 - 2015-02-13, Chemnitz, Germany.

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Abstract

Sentinel-1A was launched in April 2014 to operate a SAR instrument in C-band as part of the COPERNICUS program of the European Commission and the European Space Agency (ESA) for global Earth monitoring. The calibration of the SAR instrument was performed by ESA and their partners during the commissioning phase until end of September 2014. Additionally an independent verification of the Sentinel-1A instrument calibration has been undertaken by the German Aerospace Center (DLR) on behalf of ESA. For this purpose innovative active and passive point targets were developed. Three corner reflectors and three transponders are permanently installed in Southern Germany covering an east-west range of about 80 kilometres. The targets are remote controlled and have been operated since launch of Sentinel-1A. The paper describes the characteristics of the point targets and gives a detailed view on the Sentinel-1A system calibration using these targets. The analysis includes the geometric calibration, the antenna pointing determination and the radiometric calibration, altogether characterizing the performance for different acquisition modes.

Item URL in elib:https://elib.dlr.de/102791/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Full-paper reviewed conference contribution (published in proceedings)
Title:Sentinel-1A Calibration Support during Routine Operation using innovative Point Targets
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schmidt, KerstenUNSPECIFIEDUNSPECIFIED
Schwerdt, MarcoUNSPECIFIEDUNSPECIFIED
Tous Ramon, NúriaUNSPECIFIEDUNSPECIFIED
Castellanos Alfonzo, GabrielUNSPECIFIEDUNSPECIFIED
Zink, ManfredUNSPECIFIEDUNSPECIFIED
Date:2015
Journal or Publication Title:Electromagnetic Wave Propagation and Scattering in Remote Sensing and Communications (Reviewed Proceedings of WFMN)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:Chemnitz University Publication
Status:Published
Keywords:Sentinel-1A, Calibration, Point target
Event Title:Wave Propagation in Communication, Microwaves Systems and Navigation (WFMN)
Event Location:Chemnitz, Germany
Event Type:international Conference
Event Dates:2015-02-10 - 2015-02-13
Organizer:ITG Fachausschusses 7.5 "Wellenausbreitung"
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - SAR Expert Support Lab
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Schmidt, Dr. Kersten
Deposited On:02 Feb 2016 11:48
Last Modified:21 Sep 2017 09:42

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