{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T14:11:53Z","timestamp":1774966313586,"version":"3.50.1"},"reference-count":9,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[1999,9,1]],"date-time":"1999-09-01T00:00:00Z","timestamp":936144000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Signal Processing"],"published-print":{"date-parts":[[1999,9]]},"DOI":"10.1016\/s0165-1684(99)00037-7","type":"journal-article","created":{"date-parts":[[2002,7,25]],"date-time":"2002-07-25T11:39:01Z","timestamp":1027597141000},"page":"235-245","source":"Crossref","is-referenced-by-count":40,"title":["Forward-only and forward-backward sample covariances \u2013 A comparative study"],"prefix":"10.1016","volume":"77","author":[{"given":"Magnus","family":"Jansson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Petre","family":"Stoica","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/S0165-1684(99)00037-7_BIB1","unstructured":"A. Graham, Kronecker Products and Matrix Calculus with Applications, Ellis Horwood Ltd, Chichester, UK, 1981."},{"key":"10.1016\/S0165-1684(99)00037-7_BIB2","doi-asserted-by":"crossref","unstructured":"M. Jansson, B. G\u00f6ransson, B. Ottersten, Analysis of a subspace-based spatial frequency estimator, in: Proc. ICASSP\u201997, M\u00fcnchen, Germany, April 1997, pp. 4001\u20134004.","DOI":"10.1109\/ICASSP.1997.604813"},{"key":"10.1016\/S0165-1684(99)00037-7_BIB3","unstructured":"M. Jansson, B. Ottersten, Structured matrix estimation, Technical Report IR-S3-REG-9904, KTH, S3-Automatic Control, Stockholm, 1999."},{"issue":"3","key":"10.1016\/S0165-1684(99)00037-7_BIB4","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1016\/0165-1684(89)90007-8","article-title":"A self inversive array processing scheme for angle-of-arrival estimation","volume":"17","author":"Kwon","year":"1989","journal-title":"Signal Processing"},{"issue":"7","key":"10.1016\/S0165-1684(99)00037-7_BIB5","doi-asserted-by":"crossref","first-page":"1954","DOI":"10.1109\/78.700967","article-title":"Performance analysis of forward-backward matched-filterbank spectral estimators","volume":"46","author":"Li","year":"1998","journal-title":"IEEE Trans. Signal Process."},{"key":"10.1016\/S0165-1684(99)00037-7_BIB6","doi-asserted-by":"crossref","unstructured":"Q.A. Nguyen, On the uniqueness of the maximum-likelihood estimate of structured covariance matrices, IEEE Trans. Acoust. Speech Signal Process. ASSP-32 (6) (December 1984) 1249\u20131251.","DOI":"10.1109\/TASSP.1984.1164445"},{"issue":"2","key":"10.1016\/S0165-1684(99)00037-7_BIB7","doi-asserted-by":"crossref","first-page":"788","DOI":"10.1109\/78.193218","article-title":"Weighted subspace methods and spatial smoothing: analysis and comparison","volume":"41","author":"Rao","year":"1993","journal-title":"IEEE Trans. Acoust. Speech Signal Process."},{"issue":"4","key":"10.1016\/S0165-1684(99)00037-7_BIB8","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1006\/dspr.1997.0298","article-title":"On forward-backward MODE for array signal processing","volume":"7","author":"Stoica","year":"1997","journal-title":"Digital Signal Processing \u2013 A Review Journal"},{"key":"10.1016\/S0165-1684(99)00037-7_BIB9","unstructured":"P. Stoica, R. Moses, Introduction to Spectral Analysis, Prentice Hall, Upper Saddle River, New Jersey, 1997."}],"container-title":["Signal Processing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0165168499000377?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0165168499000377?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,26]],"date-time":"2019-04-26T20:26:40Z","timestamp":1556310400000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0165168499000377"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1999,9]]},"references-count":9,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1999,9]]}},"alternative-id":["S0165168499000377"],"URL":"https:\/\/doi.org\/10.1016\/s0165-1684(99)00037-7","relation":{},"ISSN":["0165-1684"],"issn-type":[{"value":"0165-1684","type":"print"}],"subject":[],"published":{"date-parts":[[1999,9]]}}}