Enhancement DPT Method in Terms of Estimation Chirp Rate and Central Frequency Parameters of the LFM Signal

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dc.contributor.authorRabiee, Nooshin
dc.contributor.authorAzad, Hamid
dc.contributor.authorParhizgar, Naser
dc.coverage.issue1cs
dc.coverage.volume28cs
dc.date.accessioned2020-04-23T06:56:45Z
dc.date.available2020-04-23T06:56:45Z
dc.date.issued2019-04cs
dc.description.abstractThe discrete polynomial-phase transform (DPT) method estimate chirp rate and central frequency of LFM signal based on sequential estimation of polynomial phase parameters. This method uses Nonlinear Least Squares (NLS) technique (based on FFT) to estimate phase parameters of the LFM signal. Although NLS enjoys a high level of statistical accuracy, it entails a lot of calculations. In this paper, in order to enhance the precision of estimation and also to reduce the calculations in DPT method, a technique called "combined" is proposed and used in DPT method in order to estimate chirp rate and central frequency of LFM signal .The combined technique firstly provides an initial estimate of frequency interval based on NLS criterion in single-exponential mode, then using initial estimation and Random Basis Functions method (RBF). Simulation results are presented to demonstrate better performance of DPT method by combined technique in order to estimate phase parameters of LFM signal as compared with the existing techniques.en
dc.formattextcs
dc.format.extent230-237cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2019 vol. 28, č. 1, s. 230-237. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2019.0230en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/186850
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2019/19_01_0230_0237.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectDiscrete Polynomial Phase Transform (DPT)en
dc.subjectNonlinear Least Square (NLS)en
dc.subjectSynthetic Aperture Radar (SAR)en
dc.subjectLinear Frequency Modulation (LFM)en
dc.titleEnhancement DPT Method in Terms of Estimation Chirp Rate and Central Frequency Parameters of the LFM Signalen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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