Linear and Non-Linear Synthesis of Unequally Spaced Time-Modulated Linear Arrays Using Evolutionary Algorithms

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dc.contributor.authorPatra, Somnath
dc.contributor.authorMandal, Sujit Kumar
dc.contributor.authorMahanti, Gautam Kumar
dc.contributor.authorPathak, Narendra Nath
dc.coverage.issue3cs
dc.coverage.volume30cs
dc.date.accessioned2021-11-08T10:24:41Z
dc.date.available2021-11-08T10:24:41Z
dc.date.issued2021-09cs
dc.description.abstractA novel method of designing unequally spaced time-modulated arrays (UESTMAs) by handling fewer optimization parameters with reduced problem dimension is presented in this paper. For synthesizing UESTMA, two design parameters, specifically, the non-linear parameter - element position, and the linear parameter – on-time durations are optimized in two steps. Different possible cases of linear and non-linear synthesis methods such as, position-only (PO), on-time only (OTO), position then on-time (PTOT), on-time then position (OTTP), and simultaneous position on-time (SPOT) are considered. To examine the performance of the synthesis methods, three global search stochastic algorithms based on differential evolution (DE), teaching-learning-based optimization (TLBO) and quantum particle swarm optimization (QPSO) have been employed to achieve the array pattern with significantly suppressed side lobe levels and sideband levels. Through comparative study, it is observed that the two step non-liner to linear synthesis method by fewer optimization parameters is efficient to provide better pattern with less computation time.en
dc.formattextcs
dc.format.extent488-495cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2021 vol. 30, č. 3, s. 488-495. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2021.0488en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/201834
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2021/21_03_0488_0495.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectTime-modulationen
dc.subjectposition-onlyen
dc.subjecton-time onlyen
dc.subjectposition on-timeen
dc.subjectside lobe levelen
dc.subjectsideband levelen
dc.titleLinear and Non-Linear Synthesis of Unequally Spaced Time-Modulated Linear Arrays Using Evolutionary Algorithmsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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