Surgery – Truss – Pad
Patent
1995-01-27
1996-10-01
Jaworski, Francis
Surgery
Truss
Pad
A61B 806
Patent
active
055603637
ABSTRACT:
A method for velocity estimation based on a complex demodulated doppler signal in a multi-gated doppler. The method is based on the autocorrelation function estimates of the complex demodulated doppler signal. Contribution to the correlation function from the receiver noise is found by measuring the noise in absence of echo signals. The obtained values are subtracted from the correlation estimates before further processing. A limited number of candidates for the true velocity are calculated from the autocorrelation function phase.
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Kristoffersen Kjell
Torp Hans
Jaworski Francis
Vingmed Sound A/S
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