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dc.contributorBordoni, Frederica
dc.contributor.authorMakhoul Varona, Eduardo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2009-08-07T07:05:54Z
dc.date.available2009-08-07T07:05:54Z
dc.date.issued2009-06-29
dc.identifier.urihttp://hdl.handle.net/2099.1/7333
dc.descriptionPremi GMV en l’àmbit de la Tecnologia Espacial a la millor Tesis de Màster del Màster MINT. Projecte realitzat en col.laboració amb el centre German Aerospace Center (DLR)
dc.description.abstractThe thesis “Adaptive Digital Beam-Forming for High-Resolution Wide-Swath Synthetic Aperture Radar” is a project carried out in the Microwaves and Radar Institute (IHR) at the German Aerospace Center (DLR) The objective of this work is to investigate the possibility of applying direction of arrival (DOA) estimation methods to high-resolution, wide-swath Synthetic Aperture Radar (SAR) spaceborne systems, based on receive beam steering algorithm. In the conventional algorithm, called SCan-On-REceive (SCORE), the steering direction of the receive pattern corresponds to the expected DOA of the actual echo, which is computed assuming a stringent spherical Earth model. In presence of topographic height, SCORE works under model mismatch and losses of several dBs could be reached with respect to ideal operational conditions. This thesis analyses the possibility to overcome SCORE loss of performance by using a data-dependent, adaptive mechanism for receive beam steering. In particular, a new algorithm, denoted as Adaptive Digital Beam-Forming (ADBF), is proposed. This algorithm steers the beam based on the actual spatial distribution of the received signal power. The performance of the proposed algorithm is evaluated by Monte Carlo simulations and compared with that of the conventional, non-adaptive SCORE in different operational scenarios versus the main SAR system parameters. Moreover, based on Cramér-Rao Lower Bound analysis, the optimal performance achievable by the adaptive approach has been evaluated and used as a benchmark on the proposed algorith
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
dc.subject.lcshSynthetic aperture radar
dc.subject.lcshSignal processing
dc.titleAdaptive Digital Beam-Forming for High-Resolution Wide-Swath Synthetic Aperture Radar
dc.typeMaster thesis (pre-Bologna period)
dc.subject.lemacRadar d'obertura sintètica
dc.subject.lemacTractament del senyal
dc.description.awardwinningAward-winning
dc.rights.accessOpen Access
dc.audience.educationlevelEstudis de primer/segon cicle
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona
dc.contributor.covenanteeDeutsches Zentrum für Luft-und Raumfahrt


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