{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T17:13:07Z","timestamp":1774631587253,"version":"3.50.1"},"reference-count":22,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2022,8,14]],"date-time":"2022-08-14T00:00:00Z","timestamp":1660435200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Innovation Project of Science and Technology Commission of the Central Military Commission","award":["19-HXXX-01-ZD-006-XXX-XX"],"award-info":[{"award-number":["19-HXXX-01-ZD-006-XXX-XX"]}]},{"name":"the Innovation Project of Science and Technology Commission of the Central Military Commission","award":["61424110302"],"award-info":[{"award-number":["61424110302"]}]},{"name":"the Innovation Project of Science and Technology Commission of the Central Military Commission","award":["61771015"],"award-info":[{"award-number":["61771015"]}]},{"DOI":"10.13039\/501100014206","name":"the National Key Laboratory Foundation","doi-asserted-by":"publisher","award":["19-HXXX-01-ZD-006-XXX-XX"],"award-info":[{"award-number":["19-HXXX-01-ZD-006-XXX-XX"]}],"id":[{"id":"10.13039\/501100014206","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014206","name":"the National Key Laboratory Foundation","doi-asserted-by":"publisher","award":["61424110302"],"award-info":[{"award-number":["61424110302"]}],"id":[{"id":"10.13039\/501100014206","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014206","name":"the National Key Laboratory Foundation","doi-asserted-by":"publisher","award":["61771015"],"award-info":[{"award-number":["61771015"]}],"id":[{"id":"10.13039\/501100014206","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["19-HXXX-01-ZD-006-XXX-XX"],"award-info":[{"award-number":["19-HXXX-01-ZD-006-XXX-XX"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61424110302"],"award-info":[{"award-number":["61424110302"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61771015"],"award-info":[{"award-number":["61771015"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>A novel direction-of-arrival (DOA) estimator is proposed for the mixed uncorrelated and correlated wideband sources in the multipath environment. Firstly, the novel signal model is established using the aligned envelope technique. Next, the estimator can be divided into two parts. Theoretical analyses show that the correlated components cannot form peaks and only the DOA of uncorrelated signals can be acquired in the first part. Then, the correlated components are extracted from the corresponding covariance matrix and handled in the second part. Using the concept of linear search, the computational complexity of the algorithm is significantly reduced. Simulation results show the direction of uncorrelated and correlated wideband signals can be processed and distinguished effectively in the proposed method. Compared with previous DOA estimators for correlated wideband sources, the estimation accuracy has been improved.<\/jats:p>","DOI":"10.3390\/rs14163951","type":"journal-article","created":{"date-parts":[[2022,8,15]],"date-time":"2022-08-15T23:44:03Z","timestamp":1660607043000},"page":"3951","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Efficient DOA Estimation for Wideband Sources in Multipath Environment"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1187-8671","authenticated-orcid":false,"given":"Xiaoyu","family":"Zhang","sequence":"first","affiliation":[{"name":"National Laboratory of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4732-0015","authenticated-orcid":false,"given":"Haihong","family":"Tao","sequence":"additional","affiliation":[{"name":"National Laboratory of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1638-6249","authenticated-orcid":false,"given":"Ziye","family":"Fang","sequence":"additional","affiliation":[{"name":"School of Computer Science and Technology, Xidian University, Xi\u2019an 710071, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9654-064X","authenticated-orcid":false,"given":"Jian","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Electronics and Information, Northwestern Polytechnical University, Xi\u2019an 710072, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Liu, L., and Rao, Z. 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