CONVOLUTIONAL NEURAL NETWORKS FOR FEATURE EXTRACTION AND AUTOMATED TARGET RECOGNITION IN SYNTHETIC APERTURE RADAR IMAGES

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dc.contributor.advisorKendall, Walter A.
dc.contributor.advisorZhao, Ying
dc.contributor.authorGeldmacher, John E.
dc.contributor.departmentInformation Sciences (IS)
dc.contributor.secondreaderYerkes, Christopher, National Intelligence University
dc.date.accessioned2020-08-21T00:25:48Z
dc.date.available2020-08-21T00:25:48Z
dc.date.issued2020-06
dc.description.abstractAdvances in the development of deep neural networks and other machine learning (ML) algorithms, combined with ever more powerful hardware and the huge amount of data available on the internet, has led to a revolution in ML research and applications. These advances have massive potential for military applications at the tactical level, particularly in improving situational awareness and speeding kill chains. One opportunity for the application of ML to an existing problem set in the military is in the analysis of Synthetic Aperture Radar (SAR) imagery. Synthetic Aperture Radar imagery is a useful tool for imagery analysts because it is capable of capturing high-resolution images at night and regardless of cloud coverage. There is, however, a limited amount of publicly available SAR data to train a machine learning model. This thesis seeks to demonstrate that transfer learning from a convolutional neural network trained on the ImageNet dataset is effective when retrained on SAR images. It then compares the performance of the neural network to shallow classifiers trained on features extracted from images passed through the neural network. This thesis shows that cross-modality transfer learning from features learned on photographs to SAR images is effective and that shallow classification techniques show improved performance over the baseline neural network in noisy conditions and as training data is reduced.en_US
dc.description.distributionstatementApproved for public release. distribution is unlimiteden_US
dc.description.serviceCaptain, United States Marine Corpsen_US
dc.identifier.thesisid34245
dc.identifier.urihttps://hdl.handle.net/10945/65528
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.authormachine learningen_US
dc.subject.authorartificial intelligenceen_US
dc.subject.authorimagery analysisen_US
dc.subject.authordeep learningen_US
dc.subject.authortransfer learningen_US
dc.subject.authorsynthetic aperture radaren_US
dc.subject.authorconvolutional neural networksen_US
dc.subject.authorSynthetic Aperture Radaren_US
dc.subject.authorSARen_US
dc.titleCONVOLUTIONAL NEURAL NETWORKS FOR FEATURE EXTRACTION AND AUTOMATED TARGET RECOGNITION IN SYNTHETIC APERTURE RADAR IMAGESen_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineInformation Warfare Systems Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameMaster of Science in Information Warfare Systems Engineeringen_US
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