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dc.contributor.advisor Borcea, Liliana
dc.creatorGallardo Palacios, Ricardo
dc.date.accessioned 2013-06-05T15:50:06Z
dc.date.accessioned 2013-06-05T15:50:09Z
dc.date.available 2013-06-05T15:50:06Z
dc.date.available 2013-06-05T15:50:09Z
dc.date.created 2012-12
dc.date.issued 2013-06-05
dc.date.submitted December 2012
dc.identifier.urihttps://hdl.handle.net/1911/71297
dc.description.abstract In 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.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectSAR
Autofocus
dc.title Autofocus for Synthetic Aperture Radar
dc.contributor.committeeMember Symes, William W.
dc.contributor.committeeMember Yin, Wotao
dc.date.updated 2013-06-05T15:50:09Z
dc.identifier.slug 123456789/ETD-2012-12-295
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Computational and Applied Mathematics
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.identifier.citation Gallardo Palacios, Ricardo. "Autofocus for Synthetic Aperture Radar." (2013) Master’s Thesis, Rice University. https://hdl.handle.net/1911/71297.


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