Optimal transversal filter bank for 3D real-time acoustical imaging
Emad S. Ebbini · 2003
An optimal transversal filter bank for parallel processing of echo data in 3-D real-time acoustical imaging is proposed. It is based on discretized linear time-domain formation of the imaging equation for systems that use either coded-aperture transducers or transmitter arrays with coded-excitation. The two approaches are mathematically equivalent and result in an imaging system architecture which is based on parallel processing of a sampled vector of echo data with a bank of transversal filters. The filter coefficients are obtained through a pseudoinverse operator which is designed to decouple echoes received from different image lines.>