H. Wang, M. Kaveh

Research output: Contribution to journalArticlepeer-review


The authors present an analytical evaluation of detection (determination of the number of sources) and estimation performance of narrowband signal-subspace processing for multiple-source direction-finding. The probabilities of underestimating and overestimating the number of sources are derived, under asymptotic conditions and around the threshold region, in terms of the choice of a penalty function and signal, noise, and array parameters for at most two closely spaced sources in spatially white noise. A scalar measure is introduced for evaluating the quality of the estimated signal-subspace. On the basis of the statistics of this measure performance, thresholds are demonstrated for the signal-to-noise ratio, angle separation, and correlation between two equipowered sources.

Original languageEnglish (US)
Pages (from-to)589-592
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - Dec 1 1986


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