{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T05:10:18Z","timestamp":1756357818531,"version":"3.44.0"},"reference-count":30,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","license":[{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Access"],"published-print":{"date-parts":[[2025]]},"DOI":"10.1109\/access.2025.3597782","type":"journal-article","created":{"date-parts":[[2025,8,11]],"date-time":"2025-08-11T17:44:23Z","timestamp":1754934263000},"page":"146820-146829","source":"Crossref","is-referenced-by-count":0,"title":["Off-Eccentricity in a Multi-Ring Planar Array\u2014Improving the Cram\u00e9r\u2013Rao Bound for Azimuth-Elevation Direction Finding"],"prefix":"10.1109","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1381-8525","authenticated-orcid":false,"given":"Dominic","family":"Makaa Kitavi","sequence":"first","affiliation":[{"name":"Department of Mathematics and Statistics, University of Embu, Embu, Kenya"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1583-6682","authenticated-orcid":false,"given":"Kainam Thomas","family":"Wong","sequence":"additional","affiliation":[{"name":"College of Computer Studies, De La Salle University, Manila, Philippines"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5480-1741","authenticated-orcid":false,"given":"Yue","family":"Ivan Wu","sequence":"additional","affiliation":[{"name":"College of Electronics and Information Engineering, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charles","family":"Hung Lee","sequence":"additional","affiliation":[{"name":"Department of Mathematics, California State University, Fullerton, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/78.80843"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/icsmc.2005.1571694"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/ICASSP.2005.1416131"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1109\/ISCAS.2005.1465587"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/IROS.2005.1545095"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2005.855102"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/TAP.2005.859911"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2006.882109"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1109\/ICEAA.2010.5651752"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/WCSP.2010.5633451"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/SM2ACD.2010.5672331"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/DTIS.2010.5487542"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/SIU.2010.5650429"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1049\/iet-map.2011.0492"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1155\/2012\/712318"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/DTIS.2012.6232980"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/LAPC.2012.6403022"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1109\/TAES.2013.6494386"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2013.2266322"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1080\/09205071.2013.823122"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/859590"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1109\/APS.2015.7305165"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1016\/j.sigpro.2016.02.021"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.3390\/s16122109"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1109\/TSP.2016.7760854"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.1109\/LAWP.2016.2629189"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2867460"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1109\/RADAR.2018.8378661"},{"issue":"8","key":"ref29","first-page":"510","article-title":"Summation of finite series of integers","volume":"27","author":"Lin","year":"2001","journal-title":"Crux Mathematicorum With Math. Mayhem"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1002\/9781118601877"}],"container-title":["IEEE Access"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx8\/6287639\/10820123\/11122533.pdf?arnumber=11122533","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T04:28:34Z","timestamp":1756355314000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/11122533\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025]]},"references-count":30,"URL":"https:\/\/doi.org\/10.1109\/access.2025.3597782","relation":{},"ISSN":["2169-3536"],"issn-type":[{"type":"electronic","value":"2169-3536"}],"subject":[],"published":{"date-parts":[[2025]]}}}