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The CFAR adaptive subspace detector is a scale-invariant GLRT

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dc.contributor.authorScharf, Louis L., author
dc.contributor.authorKraut, Shawn, author
dc.contributor.authorIEEE, publisher
dc.date.accessioned2007-01-03T04:24:49Z
dc.date.available2007-01-03T04:24:49Z
dc.date.issued1999
dc.description.abstractThe constant false alarm rate (CFAR) matched subspace detector (CFAR MSD) is the uniformly most-powerful-invariant test and the generalized likelihood ratio test (GLRT) for detecting a target signal in noise whose covariance structure is known but whose level is unknown. Recently, the CFAR adaptive subspace detector (CFAR ASD), or adaptive coherence estimator (ACE), was proposed for detecting a target signal in noise whose covariance structure and level are both unknown and whose covariance structure is estimated with a sample covariance matrix based on training data. We show here that the CFAR ASD is GLRT when the test measurement is not constrained to have the same noise level as the training data. As a consequence, this GLRT is invariant to a more general scaling condition on the test and training data than the well-known GLRT of Kelly.
dc.description.sponsorshipThis work was supported by the Office of Naval Research under Contract N00014-89-J-1070 and by the National Science Foundation under Contract MIP-9529050.
dc.format.mediumborn digital
dc.format.mediumarticles
dc.identifier.bibliographicCitationKraut, Shawn and Louis L. Scharf, The CFAR Adaptive Subspace Detector is a Scale-Invariant GLRT, IEEE Transactions on Signal Processing 47, no. 9 ( September 1999): 2538-2541.
dc.identifier.urihttp://hdl.handle.net/10217/748
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofFaculty Publications
dc.rights©1999 IEEE.
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectmultidimensional signal detection
dc.subjectmatched filters
dc.subjectmaximum likelihood detection
dc.subjectadaptive arrays
dc.subjectradar detection
dc.titleThe CFAR adaptive subspace detector is a scale-invariant GLRT
dc.typeText

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