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Information theoretic criteria for the determination of the number of signals in spatially correlated noise

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2 Author(s)
Zhang, Q.T. ; Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada ; Kon Max Wong

The problem of determining the number of signals in high-resolution array processing when the noise is spatially correlated (having an unknown covariance matrix) is examined. By considering a model in which two sensor arrays are well separated such that their noise outputs are uncorrelated, the authors develop a likelihood function whose maximum can be expressed in a very simple form involving the canonical correlation coefficients. This likelihood function and a choice of penalty functions constitute a number of new information theoretic criteria suitable for the determination of the number of signals in an unknown correlated noise environment. Furthermore, it is demonstrated that the new criteria are applicable in the case when only one sensor array is available

Published in:

Signal Processing, IEEE Transactions on  (Volume:41 ,  Issue: 4 )

Date of Publication:

Apr 1993

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