Title :
Optimal transversal filter bank for 3D real-time acoustical imaging
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
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
Keywords :
acoustic imaging; acoustic signal processing; echo; filtering and prediction theory; image processing; time-domain analysis; 3D real-time acoustical imaging; coded-aperture transducers; coded-excitation; discretized linear time-domain formation; echo data; echo decoupling; optimal transversal filter bank; parallel processing; pseudoinverse operator; transmitter arrays; Acoustic imaging; Acoustic transducers; Baseband; Equations; Matched filters; Parallel processing; Time domain analysis; Transmitters; Transversal filters; Vectors;
Conference_Titel :
Signals, Systems and Computers, 1992. 1992 Conference Record of The Twenty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-3160-0
DOI :
10.1109/ACSSC.1992.269156
