Show simple item record

dc.contributor.advisorFargues, Monique P.
dc.contributor.advisorHippenstiel, Ralph D.
dc.contributor.authorMoraitakis, Ioannis.
dc.dateSeptember, 1999
dc.date.accessioned2012-09-07T15:35:34Z
dc.date.available2012-09-07T15:35:34Z
dc.date.issued1999-09
dc.identifier.urihttp://hdl.handle.net/10945/13708
dc.description.abstractThis thesis applies time-frequency transformations to radar signals. Specifically, it considers the feasibility of applying time-frequency transformations to extract the intra-pulse modulation parameters of radar signals. In this work, we consider radar signals with analog pulse compression; specifically linear or hyperbolic intra-pulse modulation. Several time-frequency transformations are investigated to identify which one gives the most accurate image representation for signals in noisy environments. Next, image processing techniques are applied in conjunction with an adaptive curve fitting method, for the hyperbolic modulation scheme, to extract the parameters of the frequency equation. Results show that for the linear chip case the frequency equation can be estimated with small error down to SNR equal to -10dB. The proposed method for the hyperbolic chirp modulation is less immune to noise degradation and it can be used down to SNR level equal to 2dB.en_US
dc.description.urihttp://archive.org/details/featureextractio1094513708
dc.format.extentx, 106 p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.titleFeature extraction of intra-pulse modulated radar signals using time-frequency analysisen_US
dc.typeThesisen_US
dc.description.serviceHellenic Navy author.en_US
etd.thesisdegree.nameM.S. in Electrical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record