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dc.contributor.authorBrekke, Camilla
dc.contributor.authorAnfinsen, Stian Normann
dc.contributor.authorLarsen, Yngvar
dc.date.accessioned2018-05-29T06:56:50Z
dc.date.available2018-05-29T06:56:50Z
dc.date.issued2012-01-27
dc.description.abstractThe subaperture cross-correlation magnitude (SCM) has previously been proposed as a statistic that improves the contrast between small ship targets and the surrounding sea in synthetic-aperture-radar images. This preprocessing technique utilizes the fast decorrelation of open-water surface ripples on the scale of the SAR wavelength relative to coherent targets such as a ship. However, optimization of the bandwidth splitting in the subband extraction has not received any attention. The aim of this letter is twofold: 1) to describe the technical details of the algorithm, including modifications that are necessary to allow overlapping subapertures; and 2) to study the effect of splitting the bandwidth into two azimuth subapertures with respect to varying bandwidths and subaperture overlap. The impact on the SCM is investigated in terms of measures of speckle reduction and target-to-clutter contrast. Experiments are performed on real single-look complex SAR data containing repeated acquisitions of a vessel in open sea. The results indicate that the subband extraction strategy has a clear impact on performance.en_US
dc.descriptionEmbargo of 24 months from date of publishing on accepted manuscript version. Link to publisher's version: <a href=https://doi.org/10.1109/LGRS.2012.2223656>https://doi.org/10.1109/LGRS.2012.2223656</a> Copyright notice: “© © 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”en_US
dc.identifier.citationBrekke C, Anfinsen SN, Larsen Y. Subband Extraction Strategies in Ship Detection With the Subaperture Cross-Correlation Magnitude. IEEE Geoscience and Remote Sensing Letters. 2013;10(4):786-790en_US
dc.identifier.cristinIDFRIDAID 978728
dc.identifier.doi10.1109/LGRS.2012.2223656
dc.identifier.issn1545-598X
dc.identifier.issn1558-0571
dc.identifier.urihttps://hdl.handle.net/10037/12796
dc.language.isoengen_US
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en_US
dc.relation.journalIEEE Geoscience and Remote Sensing Letters
dc.relation.projectIDNorges forskningsråd: 195143en_US
dc.rights.accessRightsembargoedAccessen_US
dc.subjectBildebehandling / Image processingen_US
dc.subjectDigital signalbehandling / Digital signal processingen_US
dc.subjectMatematisk og statistisk modellering / Mathematical and statisctical modellingen_US
dc.subjectSkipsdeteksjon / Ship detectionen_US
dc.subjectSyntetisk aperturradar / Synthetic aperture radaren_US
dc.titleSubband Extraction Strategies in Ship Detection With the Subaperture Cross-Correlation Magnitudeen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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