{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T06:55:08Z","timestamp":1750834508964,"version":"3.37.3"},"reference-count":21,"publisher":"Wiley","license":[{"start":{"date-parts":[[2019,6,27]],"date-time":"2019-06-27T00:00:00Z","timestamp":1561593600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61401513"],"award-info":[{"award-number":["61401513"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Sensors"],"published-print":{"date-parts":[[2019,6,27]]},"abstract":"<jats:p>Two-dimensional direction-of-arrival (DOA) estimation in coprime planar array involves problems that the complexity of spectral peak search is huge and the noncircular feature of signals is not considered. Considering that unitary estimating signal parameters via rotational invariance techniques (Unitary-ESPRIT) is a low complexity subspace algorithm, an approach to estimate DOA fast for multiple signals is proposed in this paper. We first apply Unitary-ESPRIT to solve one possible value of each signal. Given the relationship between the ambiguous values and real values, we then have all possible values belonging to each subarray. Through finding the common values of two subarrays, we finally obtain the highly precise true DOAs. Moreover, when the signals are noncircular, we present an improved method using noncircular Unitary-ESPRIT, which is favorable in terms of accuracy and degree of freedom. Simulation results demonstrate the effectiveness of our proposed methods.<\/jats:p>","DOI":"10.1155\/2019\/6782587","type":"journal-article","created":{"date-parts":[[2019,6,27]],"date-time":"2019-06-27T19:31:37Z","timestamp":1561663897000},"page":"1-9","source":"Crossref","is-referenced-by-count":2,"title":["Fast Two-Dimensional Direction-of-Arrival Estimation of Multiple Signals in Coprime Planar Array"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8630-9049","authenticated-orcid":true,"given":"Haiyun","family":"Xu","sequence":"first","affiliation":[{"name":"National Digital System Engineering and Technological Research R & D Center, Zhengzhou 450001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6896-4242","authenticated-orcid":true,"given":"Yankui","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Digital System Engineering and Technological Research R & D Center, Zhengzhou 450001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7302-2994","authenticated-orcid":true,"given":"Bin","family":"Ba","sequence":"additional","affiliation":[{"name":"National Digital System Engineering and Technological Research R & D Center, Zhengzhou 450001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daming","family":"Wang","sequence":"additional","affiliation":[{"name":"National Digital System Engineering and Technological Research R & D Center, Zhengzhou 450001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peng","family":"Han","sequence":"additional","affiliation":[{"name":"National Digital System Engineering and Technological Research R & D Center, Zhengzhou 450001, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"14","doi-asserted-by":"publisher","DOI":"10.3390\/s18061741"},{"key":"1","doi-asserted-by":"publisher","DOI":"10.3390\/electronics6030064"},{"issue":"4","key":"2","volume":"63","year":"2014","journal-title":"Acta Physica Sinica"},{"issue":"3","key":"3","first-page":"1920","volume":"38","year":"2016","journal-title":"Journal of Electronics & Information Technology"},{"issue":"3","key":"4","first-page":"1","volume":"38","year":"2016","journal-title":"ACM Computing Surveys"},{"issue":"3-4","key":"5","first-page":"235","volume":"8","year":"2009","journal-title":"Ad Hoc & Sensor Wireless Networks"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2012.2203125"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1109\/tsp.2010.2089682"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1049\/el.2017.2292"},{"issue":"8","key":"11","volume":"17","year":"2017","journal-title":"Sensors"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1109\/JSEN.2016.2567422"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2896979"},{"issue":"12","key":"16","doi-asserted-by":"crossref","first-page":"1286","DOI":"10.3390\/app7121286","volume":"7","year":"2017","journal-title":"Applied Sciences (Switzerland)"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.3390\/app8101731"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.3390\/app8091440"},{"issue":"5","key":"19","first-page":"1226","volume":"40","year":"2018","journal-title":"Dianzi Yu Xinxi Xuebao\/Journal of Electronics and Information Technology"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1155\/2019\/3078376"},{"key":"22","doi-asserted-by":"publisher","DOI":"10.1109\/78.485927"},{"key":"23","doi-asserted-by":"publisher","DOI":"10.1109\/78.382406"},{"key":"25","doi-asserted-by":"publisher","DOI":"10.1109\/78.651206"},{"key":"26","doi-asserted-by":"publisher","DOI":"10.1109\/TAP.1986.1143830"}],"container-title":["Journal of Sensors"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6782587.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6782587.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2019\/6782587.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,9,21]],"date-time":"2019-09-21T21:36:32Z","timestamp":1569101792000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/js\/2019\/6782587\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,6,27]]},"references-count":21,"alternative-id":["6782587","6782587"],"URL":"https:\/\/doi.org\/10.1155\/2019\/6782587","relation":{},"ISSN":["1687-725X","1687-7268"],"issn-type":[{"type":"print","value":"1687-725X"},{"type":"electronic","value":"1687-7268"}],"subject":[],"published":{"date-parts":[[2019,6,27]]}}}