Forward/backward spatial smoothing techniques for coherent signal identification

Unnikrishna Pillai, Byung Ho Kwon

Research output: Contribution to journalArticle

Abstract

A spatial smoothing scheme is further investigated in the context of coherent signal classification. It is shown that by making use of a set of forward and complex conjugated backward subarrays simultaneously, it is always possible to estimate any K directions of arrival using at most 3K/2 sensor elements. This is achieved by creating a smoothed array output covariance matrix that is structurally identical to a covariance matrix in some noncoherent situation. By incorporating the eigenstructure- based techniques on this smoothed covariance matrix, it then becomes possible to correctly identify all directions of arrival irrespective of their correlation.

Original languageEnglish (US)
Pages (from-to)8-15
Number of pages8
JournalIEEE Transactions on Acoustics, Speech, and Signal Processing
Volume37
Issue number1
DOIs
StatePublished - Jan 1989

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Covariance matrix
Direction of arrival
Sensors

ASJC Scopus subject areas

  • Signal Processing

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Forward/backward spatial smoothing techniques for coherent signal identification. / Pillai, Unnikrishna; Kwon, Byung Ho.

In: IEEE Transactions on Acoustics, Speech, and Signal Processing, Vol. 37, No. 1, 01.1989, p. 8-15.

Research output: Contribution to journalArticle

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