Two-Stage Fast DOA Estimation Based on Directional Antennas in Conformal Uniform Circular Array.
Identifieur interne : 000008 ( Main/Exploration ); précédent : 000007; suivant : 000009Two-Stage Fast DOA Estimation Based on Directional Antennas in Conformal Uniform Circular Array.
Auteurs : Yao Xie [République populaire de Chine] ; Mo Huang [République populaire de Chine] ; Yuanyuan Zhang [République populaire de Chine] ; Tao Duan [République populaire de Chine] ; Changyuan Wang [République populaire de Chine]Source :
- Sensors (Basel, Switzerland) [ 1424-8220 ] ; 2021.
Abstract
In conformal array radar, due to the directivity of antennas, the responses of the echo signals between different antennas are distinct, and some antennas cannot even receive the target echo signal. These phenomena significantly affect the accuracy of direction-of-arrival (DOA) estimation. To implement accurate DOA estimation in a conformal uniform circular array (UCA) composed of directional antennas, the two-stage fast DOA estimation algorithm is proposed. In the pre-processing stage, multi-target decoupling and target detection are mainly used to obtain the targets' range bin indexes set; in the rough-precise DOA estimation stage, the amplitude and phase information of each antenna are used for rough DOA estimation and precise DOA estimation, respectively. Based on simulation and actual anechoic chamber radar experiments, and through quantitative analyses of the accuracy, validity and elapsed time of the two-stage fast DOA estimation algorithm compared with the directional antenna MUSIC (DA-MUSIC), sub-array MUSIC (S-MUSIC) and Capon-like algorithms, results indicate that the two-stage fast DOA estimation algorithm can rapidly and accurately estimate DOAs in a multi-target scenario without the range-angle pair-matching procedure. Lower computational complexity and superior estimation accuracy provide the two-stage fast DOA estimation algorithm a broader application prospect in the practical engineering field.
DOI: 10.3390/s21010276
PubMed: 33401640
PubMed Central: PMC7795244
Affiliations:
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These phenomena significantly affect the accuracy of direction-of-arrival (DOA) estimation. To implement accurate DOA estimation in a conformal uniform circular array (UCA) composed of directional antennas, the two-stage fast DOA estimation algorithm is proposed. In the pre-processing stage, multi-target decoupling and target detection are mainly used to obtain the targets' range bin indexes set; in the rough-precise DOA estimation stage, the amplitude and phase information of each antenna are used for rough DOA estimation and precise DOA estimation, respectively. Based on simulation and actual anechoic chamber radar experiments, and through quantitative analyses of the accuracy, validity and elapsed time of the two-stage fast DOA estimation algorithm compared with the directional antenna MUSIC (DA-MUSIC), sub-array MUSIC (S-MUSIC) and Capon-like algorithms, results indicate that the two-stage fast DOA estimation algorithm can rapidly and accurately estimate DOAs in a multi-target scenario without the range-angle pair-matching procedure. Lower computational complexity and superior estimation accuracy provide the two-stage fast DOA estimation algorithm a broader application prospect in the practical engineering field.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">33401640</PMID><DateRevised><Year>2021</Year><Month>01</Month><Day>12</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">1424-8220</ISSN><JournalIssue CitedMedium="Internet"><Volume>21</Volume><Issue>1</Issue><PubDate><Year>2021</Year><Month>Jan</Month><Day>03</Day></PubDate></JournalIssue><Title>Sensors (Basel, Switzerland)</Title><ISOAbbreviation>Sensors (Basel)</ISOAbbreviation></Journal><ArticleTitle>Two-Stage Fast DOA Estimation Based on Directional Antennas in Conformal Uniform Circular Array.</ArticleTitle><ELocationID EIdType="pii" ValidYN="Y">E276</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.3390/s21010276</ELocationID><Abstract><AbstractText>In conformal array radar, due to the directivity of antennas, the responses of the echo signals between different antennas are distinct, and some antennas cannot even receive the target echo signal. These phenomena significantly affect the accuracy of direction-of-arrival (DOA) estimation. To implement accurate DOA estimation in a conformal uniform circular array (UCA) composed of directional antennas, the two-stage fast DOA estimation algorithm is proposed. In the pre-processing stage, multi-target decoupling and target detection are mainly used to obtain the targets' range bin indexes set; in the rough-precise DOA estimation stage, the amplitude and phase information of each antenna are used for rough DOA estimation and precise DOA estimation, respectively. Based on simulation and actual anechoic chamber radar experiments, and through quantitative analyses of the accuracy, validity and elapsed time of the two-stage fast DOA estimation algorithm compared with the directional antenna MUSIC (DA-MUSIC), sub-array MUSIC (S-MUSIC) and Capon-like algorithms, results indicate that the two-stage fast DOA estimation algorithm can rapidly and accurately estimate DOAs in a multi-target scenario without the range-angle pair-matching procedure. Lower computational complexity and superior estimation accuracy provide the two-stage fast DOA estimation algorithm a broader application prospect in the practical engineering field.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Xie</LastName><ForeName>Yao</ForeName><Initials>Y</Initials><Identifier Source="ORCID">0000-0001-6288-8541</Identifier><AffiliationInfo><Affiliation>Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>University of Chinese Academy of Sciences, Beijing 100049, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Huang</LastName><ForeName>Mo</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>University of Chinese Academy of Sciences, Beijing 100049, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Yuanyuan</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Duan</LastName><ForeName>Tao</ForeName><Initials>T</Initials><Identifier Source="ORCID">0000-0002-3576-2430</Identifier><AffiliationInfo><Affiliation>Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wang</LastName><ForeName>Changyuan</ForeName><Initials>C</Initials><Identifier Source="ORCID">0000-0001-9038-0278</Identifier><AffiliationInfo><Affiliation>Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList 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IdType="pmc">PMC7795244</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>ScientificWorldJournal. 2013 Dec 15;2013:463828</Citation><ArticleIdList><ArticleId IdType="pubmed">24453856</ArticleId></ArticleIdList></Reference><Reference><Citation>Sensors (Basel). 2018 Jun 07;18(6):</Citation><ArticleIdList><ArticleId IdType="pubmed">29875330</ArticleId></ArticleIdList></Reference><Reference><Citation>Sensors (Basel). 2018 Sep 12;18(9):</Citation><ArticleIdList><ArticleId IdType="pubmed">30213028</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Xie, Yao" sort="Xie, Yao" uniqKey="Xie Y" first="Yao" last="Xie">Yao Xie</name></noRegion><name sortKey="Duan, Tao" sort="Duan, Tao" uniqKey="Duan T" first="Tao" last="Duan">Tao Duan</name><name sortKey="Huang, Mo" sort="Huang, Mo" uniqKey="Huang M" first="Mo" last="Huang">Mo Huang</name><name sortKey="Huang, Mo" sort="Huang, Mo" uniqKey="Huang M" first="Mo" last="Huang">Mo Huang</name><name sortKey="Wang, Changyuan" sort="Wang, Changyuan" uniqKey="Wang C" first="Changyuan" last="Wang">Changyuan Wang</name><name sortKey="Xie, Yao" sort="Xie, Yao" uniqKey="Xie Y" first="Yao" last="Xie">Yao Xie</name><name sortKey="Zhang, Yuanyuan" sort="Zhang, Yuanyuan" uniqKey="Zhang Y" first="Yuanyuan" last="Zhang">Yuanyuan Zhang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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