Autoregressive Recursive Algorithms for Maximum Frequency Estimate of Doppler Ultrasonic Signals
Doppler ultrasound technique is widely used in medical applications to extract the blood velocity distribution in human arteries from Doppler frequency shift. A real-time spectral analysis of Doppler shift signals provides the time evolution of the velocity distribution in the vessels. An interesting clinical application of Doppler ultrasound technique is the estimate of the maximum frequency, beyond which the Power Spectral Density (PSD) signal-to-noise ratio goes below 0 dB.
KeywordsPower Spectral Density Singular Value Decomposition Doppler Signal Recursive Least Square Signal Subspace
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