TY - GEN

T1 - Spectral analysis from multi-rate observations

T2 - 4th IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAM 2006

AU - Amini, Ali Nasiri

AU - Takyar, Mir Shahrouz

AU - Georgiou, Tryphon T.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - We develop a framework for spectral analysis in the context of multi-rate sampling by a collection of sensors. Correlation of the time-domain samples gives rise to moment constraints for the power spectrum. We use a homotopy based technique to identify a power spectrum which is closest to a given "prior" in the Itakura-Saito distortion sense and is also consistent with the given moment statistics. It turns out that this power spectrum is the harmonic mean of the prior and a suitable "all-pole" spectral density. We then proceed to adapt the framework so as to obtain Capon-like spectral envelopes based on the same autocorrelation data.

AB - We develop a framework for spectral analysis in the context of multi-rate sampling by a collection of sensors. Correlation of the time-domain samples gives rise to moment constraints for the power spectrum. We use a homotopy based technique to identify a power spectrum which is closest to a given "prior" in the Itakura-Saito distortion sense and is also consistent with the given moment statistics. It turns out that this power spectrum is the harmonic mean of the prior and a suitable "all-pole" spectral density. We then proceed to adapt the framework so as to obtain Capon-like spectral envelopes based on the same autocorrelation data.

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M3 - Conference contribution

AN - SCOPUS:34250687470

SN - 1424403081

SN - 9781424403080

T3 - 2006 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAM 2006

SP - 521

EP - 525

BT - 2006 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAM 2006

Y2 - 12 July 2006 through 14 July 2006

ER -