Vector velocity estimation using directional beam forming and cross correlation

   
   

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.

O vetor bidimensional da velocidade que usa um campo pulsado do ultrasound pode ser determinado com a invenção. O método usa um campo focalizado do ultrasound ao longo do sentido da velocidade sondando o meio movente sob a investigação. Diversos pulsos são emitidos e os campos recebidos focalizados ao longo do sentido da velocidade cruz-são correlacionados. O deslocamento do tempo entre sinais recebidos é encontrado do pico na função do cross-correlation e a velocidade é determinada desse modo.

 
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