Estimation of coherent source bearings using variational techniques

Estimation of coherent source bearings using variational techniques

We study the problem of bearing estimation in the case of coherent signal sources with the use of variational techniques for minimizing the target function defined on the basis of the ^sub p^ norm. A regularization technique similar to projection onto a signal subspace of given dimension is proposed...

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Veröffentlicht in:Radiophysics and quantum electronics 2007-03, Vol.50 (3), p.244-251
Hauptverfasser: Turchin, V. I., Fiks, G. E., Fiks, I. Sh
Format: Artikel
Sprache:eng
Schlagworte:
Bearings
Coherence
Cramer-Rao bounds
Estimates
Mathematical analysis
Mathematical models
Norms
Projection
Variance
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Zusammenfassung:We study the problem of bearing estimation in the case of coherent signal sources with the use of variational techniques for minimizing the target function defined on the basis of the ^sub p^ norm. A regularization technique similar to projection onto a signal subspace of given dimension is proposed. The numerical calculation of the bearing estimate variance and its comparison with the maximum-likelihood estimate variance as well as with the Cramer-Rao bound (CRB) are given.[PUBLICATION ABSTRACT]
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-007-0021-0