Autofocus for Synthetic Aperture Radar

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dc.contributor.advisorBorcea, Lilianaen_US
dc.contributor.committeeMemberSymes, William W.en_US
dc.contributor.committeeMemberYin, Wotaoen_US
dc.creatorGallardo Palacios, Ricardoen_US
dc.date.accessioned2013-06-05T15:50:06Zen_US
dc.date.accessioned2013-06-05T15:50:09Zen_US
dc.date.available2013-06-05T15:50:06Zen_US
dc.date.available2013-06-05T15:50:09Zen_US
dc.date.created2012-12en_US
dc.date.issued2013-06-05en_US
dc.date.submittedDecember 2012en_US
dc.date.updated2013-06-05T15:50:09Zen_US
dc.description.abstractIn this thesis, I compare the performance of three different autofocus techniques for Synthetic Aperture Radar (SAR). The focusing is done by estimating phase errors in SAR data. The first one, the Phase Gradient Autofocus, is the most popular in the industry, it has been around for more than 20 years and it relies on the redundancy of the phase error in the SAR images. The second one, the Entropy-based minimization, uses measurements of image sharpness to focus the images and it has been available for about 10 years. The last, the Phase-space method, uses the Wigner transform and the ambiguity function of the SAR data to estimate the phase perturbations and it was recently introduced. Additionally, I develop a criteria for filtering the data for the cases in which the Phase-space method does not capture the entirety of the error.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationGallardo Palacios, Ricardo. "Autofocus for Synthetic Aperture Radar." (2013) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/71297">https://hdl.handle.net/1911/71297</a>.en_US
dc.identifier.slug123456789/ETD-2012-12-295en_US
dc.identifier.urihttps://hdl.handle.net/1911/71297en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSARen_US
dc.subjectAutofocusen_US
dc.titleAutofocus for Synthetic Aperture Radaren_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentComputational and Applied Mathematicsen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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