An Ultra-fast DOA Estimator with Circular Array Interferometer Using Lookup Table Method

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dc.contributor.authorPan, Yujian
dc.contributor.authorZhang, Xiaofa
dc.contributor.authorXie, Shaoyi
dc.contributor.authorHuang, Jingjian
dc.contributor.authorYuan, Naichang
dc.coverage.issue3cs
dc.coverage.volume24cs
dc.date.accessioned2015-10-26T08:05:46Z
dc.date.available2015-10-26T08:05:46Z
dc.date.issued2015-09cs
dc.description.abstractThe time-consuming phase ambiguity resolution makes the uniform circular array (UCA) interferometer not suitable for real-time direction-of-arrival (DOA) estimation. This paper introduces the lookup table (LUT) method to solve this problem. The key of the method is that we look up the ambiguity numbers instead of the eventual DOA from the table, and then the DOA is obtained by relatively small amount of calculation. This makes it possible that we are able to shrink the table size while maintain the DOA estimation accuracy. The table addresses cover all possible measured phase differences (PDs), which enables the method to be free of spatial scanning. Moreover, without adding frequency index to the lookup table, the estimator can realize wideband application. As an example, a field-programmable gate array (FPGA) based DOA estimator with the estimation time of 180 ns is presented, accompanied by the measured results. This method possesses the advantages of ultra-high speed, high accuracy and low memory usage.en
dc.formattextcs
dc.format.extent850-856cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2015 vol. 24, č. 3, s. 850-856. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2015.0850en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/51754
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2015/15_03_0850_0856.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectDirection-of-arrival estimationen
dc.subjectcircular array interferometeren
dc.subjectphase ambiguity resolutionen
dc.subjectlookup tableen
dc.subjectFPGAen
dc.titleAn Ultra-fast DOA Estimator with Circular Array Interferometer Using Lookup Table Methoden
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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