dc.identifier.uri |
http://dx.doi.org/10.15488/9769 |
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dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/9825 |
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dc.contributor.author |
Sommer, Aron
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dc.date.accessioned |
2020-04-08T08:51:34Z |
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dc.date.available |
2020-04-08T08:51:34Z |
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dc.date.issued |
2020-01-14 |
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dc.identifier.citation |
Sommer, Aron: Backprojection autofocus of large ships with arbitrary motion for synthetic aperture radar. Düsseldorf : VDI-Verl., 2020 (Fortschritt-Berichte VDI, Reihe 10, Informatik/Kommunikation ; 867), X, 124 S. ISBN 978-3-18-386710-3 |
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dc.description.abstract |
Radar images of the open sea taken by airborne synthetic aperture radar (SAR) show typically several smeared ships. Due to their non-linear motions on a rough sea, these ships are smeared beyond recognition, such that their images are useless for classification or identification tasks. The ship imaging algorithm presented in this thesis consists of a fast image reconstruction using the fast factorized backprojection algorithm and an extended autofocus algorithm of large moving ships. This thesis analysis the factorization parameters of the fast factorized backprojection algorithm and describes how to choose them near-optimally in order to reconstruct SAR images with minimal computational costs and without any loss of quality. Furthermore, this thesis shows how to estimate and compensate for the translation, the rotation and the deformation of a large arbitrarily moving ship in order to reconstruct a sharp image of the ship. The proposed autofocus technique generates images in which the ship type can be recognized, which was not possible by state-of-the-art autofocus techniques before. |
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dc.language.iso |
eng |
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dc.publisher |
Düsseldorf : VDI-Verlag |
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dc.relation.ispartofseries |
Fortschritt-Berichte VDI, Reihe 10, Informatik/Kommunikation;Nr. 867 |
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dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
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dc.subject |
Radar mit synthetischer Apertur (SAR) |
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dc.subject |
Backprojection |
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dc.subject |
Fast Factorized Backprojection |
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dc.subject |
Autofokussierung |
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dc.subject |
Regularisierung |
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dc.subject.ddc |
621,3 | Elektrotechnik, Elektronik
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dc.title |
Backprojection autofocus of large ships with arbitrary motion for synthetic aperture radar |
eng |
dc.type |
DoctoralThesis |
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dc.type |
Book |
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dc.type |
Text |
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dc.relation.isbn |
978-3-18-386710-3 |
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dcterms.extent |
X, 124 S. |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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