Apparatus for ultrasound flow mapping

Details Apparatus for ultrasound flow mapping Apparatus for ultrasound flow mapping

1986-04-21

1989-02-28

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

128663, 364728, G01S 754

Patent

active

048092495

ABSTRACT:
Apparatus for mapping moving objects by determining the cross-correlation function between two digitally sampled ultrasound A-line signals comprises a plurality of fractional step delay (FSD) digital interpolation filters which estimate the value of one of said input signals at intervals between said samples and a plurality of one-bit correlation circuits each of which determines the correlation between the first signal and the output of one of said interpolation filters.

REFERENCES:
patent: 3819919 (1974-06-01), McGunigle
patent: 3882444 (1975-05-01), Robertson
patent: 4017867 (1977-04-01), Claus
patent: 4041293 (1977-08-01), Kihlberg
patent: 4156876 (1979-05-01), Debuisser
patent: 4267580 (1981-05-01), Bond et al.
patent: 4458342 (1984-07-01), Tournois
patent: 4552020 (1985-11-01), Auphan
"State-Space Realizations of Fractional-Step Delay Digital Filters With Applications to Array Beamforning", IEEE Transactions on Acoustics, Speech, and Processing, vol. ASSP-32, No. 2, Apr. 1984, Shu-Hund Leung and Casper W. Barnes.

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