The two-dimensional velocity vector using a pulsed ultrasound field can be determined with the invention. The method uses a focused ultrasound field along the velocity direction for probing the moving medium under investigation. Several pulses are emitted and the focused received fields along the velocity direction are cross-correlated. The time shift between received signals is found from the peak in the cross-correlation function and the velocity is thereby determined.
|IPC||G01P5/22; G01P5/24; G01S15/58; G01S15/89; (IPC1-7): G01F1/66; G01P5/00|
|Country||International Bureau of the World Intellectual Property Organization (WIPO)|
|Publication status||Published - 2000|
Bibliographical noteAlso published as: US6725076 (B1), EP1175621 (A1), AU4393300 (A).
Jensen, J. A. (2000). IPC No. G01P5/22; G01P5/24; G01S15/58; G01S15/89; (IPC1-7): G01F1/66; G01P5/00. Vector velocity estimation using directional beam forming and cross-correlation. (Patent No. WO2000068697).