Coherent Signal Classification Using Symmetry Considerations

S. Unnikrishna Pillai, Youngjik Lee

Research output: Contribution to journalArticlepeer-review


This correspondence addresses the problem of locating the directions of arrival of a set of coherent/correlated signals in arbitrary noise field using multiple sensor elements. It is shown that by making use of a symmetric array, it is possible to perform a preprocessing on the array output correlations to generate a set of new quantities that are functionally similar to the actual correlations in an incoherent environment. The orthogonality of the direction vectors corresponding to the true angles of arrival and a set of eigenvectors of the Toeplitz matrix generated from these new quantities is then made use of in estimating the actual multipath arrival angles.

Original languageEnglish (US)
Pages (from-to)135-138
Number of pages4
JournalIEEE Transactions on Acoustics, Speech, and Signal Processing
Issue number1
StatePublished - Jan 1989

ASJC Scopus subject areas

  • Signal Processing


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