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Discrete Time Estimation of the Mean Doppler Frequency in Ultrasonic Blood Velocity Measurements

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2 Author(s)
Angelsen, Bjorn A.J. ; Division of Engineering Cybernetics, Norwegian Institute of Technology, University of Trondheim ; Kristoffersen, K.

A new Doppler frequency estimator operating in the discrete time domain is derived from an analysis of the Doppler signal statistics. It is shown that the estimator gives a nearly unbiased estimate of the mean frequency of the signal spectrum, regardless of the spectrum shape. The discrete time implementation gives the advantage that, under specified conditions, the range-velocity product of a pulsed Doppler velocity meter can be increased.

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Biomedical Engineering, IEEE Transactions on  (Volume:BME-30 ,  Issue: 4 )